Jellyfish bloom

Last updated
A golden jellyfish bloom in Jellyfish Lake, Palau Snorkeling with Jellyfish.jpg
A golden jellyfish bloom in Jellyfish Lake, Palau

Jellyfish blooms are substantial growths in population of species under the phyla Cnidaria (including several types of jellyfish) and Ctenophora (comb jellies).

Contents

Blooms may take place naturally as a result of ocean and wind patterns, [1] ecosystem shifts, and jellyfish behaviors though their occurrence is thought to have increased during the last several decades in near-shore regions and shallow seas around the world. [2] Changes in ocean conditions including eutrophication, [3] hypoxia, [4] rising ocean temperatures, [2] and coastal development, among others [5] are thought to be the main causes of increasing jellyfish blooms. Little is known regarding how future environmental conditions will affect jellyfish blooms, though this is a growing field of research. [6]

Jellyfish blooms significantly impact ecological community composition and structure by reducing available prey for higher predators. [7] [4] [1] Blooms also significantly alter carbon, nitrogen, and phosphorus cycling, shifting the availability to microbial communities. [7] Recent blooms have commonly overlapped with multiple industries, reducing fisheries catch, [8] clogging fishing nets and power plant pipes, [9] and overwhelming popular beach destinations leading to closures. [3]

Causes

A jellyfish bloom is defined as a substantial increase in a jellyfish population within a short time period; the result of a higher reproduction rate. [2] Since jellyfish naturally have high reproductive rates, high-density blooms can occur as a result of both behavioral and ecological causes. [2]

Jellyfish in Martin's Haven in green, nutrient dense water. St. Brides Bay, an adjacent body of water, is considered prone to eutrophication. Jellyfish at Martin's Haven (7730).jpg
Jellyfish in Martin's Haven in green, nutrient dense water. St. Brides Bay, an adjacent body of water, is considered prone to eutrophication.

The frequency of jellyfish blooms is currently being investigated to determine if global trends are increasing as climate patterns shift. [3] [11] Eutrophication, [3] hypoxia, [4] rising global ocean temperatures, [2] coastal development, [5] and overfishing, are suspected to be stimulating the growth of jellyfish populations. [12] [13] [11] [14] Eutrophication, for example, provides an excess of nutrients, which leads to abnormally large algal blooms that support rapid jellyfish population growth. [3] Algae that are not consumed eventually expire and are consumed by the microbial community, [15] which may lead to hypoxia. Jellyfish can tolerate hypoxic conditions where more sensitive species cannot. [1] [3] Cultural eutrophication and the increasing hypoxia in the Gulf of Mexico, [13] for example, appears to have also increased jellyfish populations. [3] [16]

Jellyfish conglomeration on an artificial surface, Monterey Aquarium. Jellyfish (2245137799).jpg
Jellyfish conglomeration on an artificial surface, Monterey Aquarium.

Spring and summer months typically have more jellyfish blooms because the warmer water temperatures cause jellyfish to reach sexual maturity more quickly. [13] [16] Rising global ocean temperatures may also contribute to the increasing jellyfish populations. [12]

Over-fishing of jellyfish predators releases jellyfish populations from top-down control. [3] For example, reduced competition from small pelagic fish in the Black Sea due to fishing has led to an apparent increase in polyp proliferation, the earliest developmental stage of jellyfish. [17]

Coastal development has also created physical changes to coastal ecosystems that favor rapid jellyfish growth. [5] Hard structures provide more space for jellyfish polyps to adhere to and develop on. [3] Floating artificial structures increase shaded substrate area jellyfish polyps thrive on. [5] Between 10,000 and 100,000 jellyfish polyps per square meter were directly or indirectly attached to artificial structures as counted in one investigation. [5] Both increased substrate and nitrogen concentration in harbors favor higher polyp population densities. [5] Jellyfish also thrive in dammed areas because they are more tolerant to variable salinity. [3]

Ecological impacts

Food web impact

A boom in jellyfish populations can have significant effects on food web structure across trophic levels. [14] Some species of carnivorous jellyfish actively consume ichthyoplankton, fish eggs and larvae. The ability of jellyfish to consume ichthyoplankton is influenced by a number of characteristics including tentacle morphology, type of cnidarian nematocyst, rates of encounters, size of predator, swimming-while-feeding behavior, and prey physical characteristics. [18] Fish eggs and small larvae make ideal prey for carnivorous jellyfish and other predators, as they have low escape ability and are larger in size compared to other zooplankton. [18] Removal of competitive top-predator fish due to overfishing has resulted in reduced competition for jellyfish food resources. [16] During a jellyfish bloom, ichthyoplankton, crustacean zooplankton (e.g. copepods and krill), and smaller medusae can be more heavily consumed. [19] Some studies have shown jellyfish can outcompete other predators in a bloom. [18] [19] [20] For example, in the 1999 Chrysaora melanaster bloom in the Bering Sea, Brodeur et al. found that the bloom had consumed roughly 32% of the total zooplankton stock, which was nearly 5% of the annual secondary production of the region. In non-bloom conditions, zooplankton consumption by jellyfish was <1% of the annual zooplankton stock. [19]

Importantly, jellyfish blooms do not always directly result in depletion of zooplankton and other competing mid-trophic species. Jellyfish blooms can have a more complicated role in food web dynamics and overall estuary health. In the case of Chesapeake Bay, sea nettles ( Chrysaora quinquecirrha ) served as a dominant top-down control within the estuarine ecosystem and were tightly coupled with oyster populations. [21] Seasonal blooms of sea nettles were partially dependent on oyster populations as oysters provided the most extensive hard substrate in Chesapeake Bay, which was critical for the polyp stage of sea nettle development. As sea nettle population decreased the top-down control on ctenophores (Mnemiopsis leidyi ) was essentially removed, allowing ctenophores to increase resulting increased ctenophore predation on oyster larvae and icthyoplankton. This ultimately exacerbated the decline of both sea nettle and oyster populations. [21]

Increase in jellyfish predation on zooplankton during blooms can also alter trophic pathways. Consumption by small and large gelatinous zooplankton interrupts energy transfer of zooplankton production to upper trophic levels. [20] Since jellyfish have few predators (large pelagic fish and sea turtles), jellyfish production does not transfer efficiently to higher trophic levels and can become a "trophic dead-end". [20]

Impacts on biochemical processes

Jellyfish blooms may alter elemental cycling of carbon (C), nitrogen (N), and phosphorus (P) in the ocean. As jellyfish populations increase they consume organic material containing C, N, and P, becoming a net sink of organic compounds. [7] Through their rapid growth, jellyfish may therefore reduce the organic material available for other organisms. Since their gelatinous bodies are not consumed by many higher trophic level organisms, jellyfish limit the trophic transfer of energy and C, N, and P up the food chain, instead shifting the trophic transfer to the microbial community. [4] [7]

Jellyfish can be one of the largest stores of biomass in the pelagic community during blooms; this makes them an important source of organic C, N, and P. [3] [4] Large populations of jellyfish also mobilize inorganic C, N, and P by moving to different regions and emitting them through excretion, mucus production, or decomposition. [7] One contingency on how jellyfish blooms affect their environment depends on whether they possess the symbiotic algae called zooxanthellae. [7] Jellyfish with zooxanthellae obtain organic C, N, and P through translocation from their symbiont, incorporating inorganic nutrients through photosynthesis. Zooxanthellae give jellyfish an advantage when organic matter is in short supply, by producing their own nutrients, also creating competition with primary producers. [7] Zooxanthellate jellyfish also translocate inorganic N and P back to their symbionts rather than excreting it into the water. Alternatively, jellyfish without zooxanthellae are heterotrophic and acquire most of their C, N, and P by ingesting zooplankton. After they consume zooplankton, these jellyfish release dissolved organic and inorganic forms of C, N, and P back into the environment. Non-zooxanthellate jellyfish excrete ammonium and phosphate necessary for primary production and some estimates suggest in some systems they are the second most important source of these nutrients behind weathering. [7] [22]

Jellyfish produce mucus rich in organic C and N that is consumed by microbial communities. The ratio of C:N in the mucus depends on species and symbiotic relationships. Mucus produced by zooxanthellate jellyfish is lower in organic N than non-zooxanthellate species. [7] Alternatively, non-zooxanthellate jellyfish have low C:N ratios which lowers the bacterial growth efficiency and shifts the community toward a respiration-dominated rather than production-dominated system. [4] [22]

Jellyfish blooms are generally short lived, collapsing from food limitations, changes in water temperature or oxygen levels, or completing their life cycle. [23] The death, sinking, and decomposition of jellyfish is rapid and leads to a mass release of dissolved and particulate, organic and inorganic matter in the water column or seafloor creating a significant source of food for the microbial community. [7] [4] [23] Sinking and decomposition rates can vary for jellyfish depending on water temperature and depth. Some jellyfish decompose before reaching the seafloor, releasing organic matter into the water column. Others fall to the floor and then decompose, enriching the sediment with organic matter. [22] [24] In both scenarios the organic matter from the jellyfish is consumed by the bacterial community who simultaneously reduce available oxygen, at times contributing to hypoxia. [7] [24] [25] [26] In some cases, the jelly-falls are too large for consumption and organic matter accumulates on the seafloor creating a physical barrier for diffusion mechanisms, reducing oxygen transport into sediments. [24] The result is an increase of ammonium in the surrounding water from bacterial remineralization and an increase of phosphate in the sediment from low oxygen redox reactions. [7] [25] [26] However, when the decomposition creates low oxygen zones the ammonium cannot be utilized by primary production. [26] Similarly, the low oxygen zones created by microbial respiration further shifts the consumption to the bacterial community (most macrofauna prefer oxygenated environments), again limiting the energy transfer to higher trophic levels. [24] [27]

Impacts on humans

Fishing

Large jellyfish blooms can disrupt fisheries operations by decreasing catch quality and overwhelming fishing gear. [13] Jellyfish blooms can potentially have detrimental impacts on fisheries by impairing the recruitment of larval fish and outcompeting economically significant fish species. The accidental introduction in the Black Sea, via ballast water, of the ctenophore Mnemiopsis leidyi and the resulting destruction in the early 1990s of the entire anchovy fishery sector is well known. [28] In overexploited fisheries, this can prevent recovery of target fish species and result in the creation of an alternative stable state. [14] [29] Blooms generally coincide with a decrease in fish catch, which results in decreased profits and fewer jobs. [3] Large blooms can also compromise fishing nets and overwhelm gear. [3] These problems along with additional fuel consumption and lost man hours have caused major economic losses for fishing fleets (e.g. roughly €8 million per year for Italian Adriatic fleet). [12]

In contrast, some blooms could potentially benefit commercial fisheries. [2] One example is found in the Chesapeake Bay estuary, where evidence suggests the presence of sea nettles ( Chrysaora quinquecirpha ) has a positive effect on oyster populations. [21] When abundant, the sea nettles are major predators of Ctenophores, ravenous predators that can compete with oysters. [21] Commercial harvesting of jellyfish has grown in southeast Asia, primarily driven by the increased demand for jellyfish in some Asian cuisines. [30] Jellyfish fisheries could be a strategy for controlling blooms, yet these fisheries still remain small scale and have not yet expanded to markets outside of Asia.  

Negative effects of jellyfish blooms are also felt in the aquaculture industry. [31] Jellyfish occasionally find their way into sea pens in industrial fish farms and have been recorded to injure and kill fish. In 2011, a fish farm in Spain reported 50,000 € in profits lost due to fish mortality following an influx of jellyfish into their pens. [31] Even short term exposure to jellyfish can be extremely harmful within fish farm enclosures. In the case of farmed salmon, exposure to jellyfish was correlated with potentially fatal gill damage. [32]

Industry

Power plants are often built on coasts and draw seawater for industrial cooling water. Jellyfish can clog the water intakes of power plants, which can decrease energy production or cause shutdowns. [9] While total shutdown due to jellyfish clogging is uncommon, revenue losses can be significant. In some estimates, revenue losses are up to 5.5 million Indian rupees (US$78,000) per day during a shutdown. [9] Not all clogs lead to shutdowns, though even minor intake perturbations can result in lost revenue. Some measures are available to prevent jellyfish-related interruptions. Power plants in Japan use bubble-curtain devices which produce air bubbles near intake valves which lift the jellyfish, reducing the number that are sucked into the pumps. [9]

Tourism

A diver swimming among jellyfish. Diver and jellyfish, Jellyfish Lake, Palau Islands, Micronesia.jpg
A diver swimming among jellyfish.

In coastal areas where tourism is ubiquitous, jellyfish blooms often present a risk to recreational activities due to beach closures and stinging swimmers. [3] During blooms, the incidence of jellyfish stings becomes much more common. In parts of the Mediterranean Sea the problem has been very pronounced. For example, in the Italian peninsula of Salento, there were 1,733 sting incidents requiring medical attention between 2007 and 2011, costing the health services approximately €400,000. [11] Stings were more commonly reported when wind conditions were blowing perpendicular to shore, which generally brought jellyfish into closer proximity with tourists. [11]

Though stings and beach closures may affect tourism, attitudes about the presence of jellyfish may not affect behavior. A study surveying beach goers in Israel found that only between 3–10% said jellyfish blooms would be a factor causing them to cancel a beach trip. [33] Attitudes differed between hypothetical and actual blooms. People were more likely to say they would avoid the beach before an outbreak, yet during outbreaks respondents were about twice as likely to say they would enter the water regardless. [33] This suggests that jellyfish blooms are in some cases more of an inconvenience to recreation than a significant hindrance. Still, models predict that persistent annual jellyfish blooms could contribute to 1.8–6.2 million € tourism losses annually. [33]

Scientific articles that support abnormal jellyfish blooms are more attractive to mainstream media, causing a dramatization of jellyfish bloom events in the public eye. This disproportionate coverage of bloom events changes public perception about the presence of jellyfish, which could lead to the impacts on tourism. [2]

Historical records

Paleontological

Various types of jellyfish population booms have been recorded in fossil evidence as early as 540 million years ago during the Early Cambrian Period. [2] Other evidence was found dating back to the Middle to Late Cambrian Period (520–540 mya) and the Neogene Period (20–30 mya). The soft-bodied anatomy of jellyfish makes fossilization rare, which provides challenges to recreate the historical abundances of blooms. Most preserved jellyfish bloom fossils are from the Cambrian period likely due to the abundance of marine life and lack of terrestrial scavengers during this time.

Modern

Global data on jellyfish populations span between 1940 and 2011 and indicate that global jellyfish populations oscillate, reaching periodic maximums every 20 years. [2] However, there appears to be a small linear increase in jellyfish abundances beginning in the 1970s. [13]  Jellyfish blooms have increased notably in Japan, the North Atlantic Shelf, Denmark, the Mediterranean Sea, and the Barents Sea. [13] [2] However, there are also several examples where jellyfish populations are decreasing in areas that are heavily impacted by humans. [16]

It is difficult to discern how jellyfish blooms will be affected by changing environmental conditions. Some studies indicate that changes in climate alter the phenology of jellyfish, causing temporal shifts in bloom events. [16] [34] Much research in the future will also investigate the impacts of short and long term environmental and climatic pressures on jellyfish abundances. [3] [14]

Data collection challenges

Challenges in discerning jellyfish bloom trends partially arise from the lack of long-term data sets. This lack of data also inhibits researchers' abilities to distinguish between jellyfish bloom oscillations caused by natural versus anthropogenic impacts. One review demonstrated that there were increasing trends of jellyfish abundances in 28 out of the 45 Large Marine Ecosystems globally. [6] However, the review notes the limitations of their analyses, given substantial time series data is unavailable. [16] Other studies refute the idea that global jellyfish populations are increasing at all; they state that these variations are simply part of the larger-scale climatic and ecosystem processes. The lack of data has been interpreted as a lack of blooms. [2]

An additional difficulty with studying jellyfish bloom dynamics is understanding how populations change in both the polyp and medusae life stages of a jellyfish. Medusae are much easier for researchers to track and observe due to their size and presence in the water. However, the ecology of the polyp life stage is not well understood in most jellyfish species. Many polyps are difficult to sample due to their fragility. [16] There have been calls for future research to focus on the ecology of both the medusae and the polyp life stages to better understand bloom dynamics throughout the organisms' entire lifespans. [14] [13]

See also

Related Research Articles

<span class="mw-page-title-main">Cnidaria</span> Aquatic animal phylum having cnydocytes

Cnidaria, is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, including jellyfish, hydroids, sea anemones, corals and some of the smallest marine parasites. Their distinguishing features are a decentralized nervous system distributed throughout a gelatinous body and the presence of cnidocytes or cnidoblasts, specialized cells with ejectable flagella used mainly for envenomation and capturing prey. Their bodies consist of mesoglea, a non-living, jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. Cnidarians are also some of the only animals that can reproduce both sexually and asexually.

<span class="mw-page-title-main">Plankton</span> Organisms living in water or air that are drifters on the current or wind

Plankton are the diverse collection of organisms found in water that are unable to propel themselves against a current. The individual organisms constituting plankton are called plankters. In the ocean, they provide a crucial source of food to many small and large aquatic organisms, such as bivalves, fish, and baleen whales.

<span class="mw-page-title-main">Jellyfish</span> Soft-bodied, aquatic invertebrates

Jellyfish, also known as sea jellies, are the medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria.

<span class="mw-page-title-main">Zooplankton</span> Heterotrophic protistan or metazoan members of the plankton ecosystem

Zooplankton are the animal component of the planktonic community, having to consume other organisms to thrive. Plankton are aquatic organisms that are unable to swim effectively against currents. Consequently, they drift or are carried along by currents in the ocean, or by currents in seas, lakes or rivers.

<i>Aurelia aurita</i> Species of jellyfish

Aurelia aurita is a species of the family Ulmaridae. All species in the genus are very similar, and it is difficult to identify Aurelia medusae without genetic sampling; most of what follows applies equally to all species of the genus.

The mesopelagiczone, also known as the middle pelagic or twilight zone, is the part of the pelagic zone that lies between the photic epipelagic and the aphotic bathypelagic zones. It is defined by light, and begins at the depth where only 1% of incident light reaches and ends where there is no light; the depths of this zone are between approximately 200 to 1,000 meters below the ocean surface.

<i>Chrysaora quinquecirrha</i> Species of jellyfish

The Atlantic sea nettle, also called the East Coast sea nettle in the United States, is a species of jellyfish that inhabits the Atlantic coast of the United States. Historically it was confused with several Chrysaora species, resulting in incorrect reports of C. quinquecirrha from other parts of the Atlantic and other oceans. Most recently, C. chesapeakei of estuaries on the Atlantic coast of the United States, as well as the Gulf of Mexico, was only fully recognized as separate from C. quinquecirrha in 2017. It is smaller than the Pacific sea nettle, and has more variable coloration, but is typically pale, pinkish or yellowish, often with radiating more deeply colored stripes on the exumbrella, especially near the margin.

<i>Phacellophora camtschatica</i> Species of jellyfish

Phacellophora camtschatica, commonly known as the fried egg jellyfish or egg-yolk jellyfish, is a very large jellyfish in the family Phacellophoridae. This species can be easily identified by the yellow coloration in the center of its body which closely resembles an egg yolk, hence how it got its common name. Some individuals can have a bell close to 60 cm (2 ft) in diameter, and most individuals have 16 clusters of up to a few dozen tentacles, each up to 6 m (20 ft) long. A smaller jellyfish, Cotylorhiza tuberculata, typically found in warmer water, particularly in the Mediterranean Sea, is also popularly called a fried egg jellyfish. Also, P. camtschatica is sometimes confused with the Lion's mane jellyfish.

<i>Phyllorhiza punctata</i> Species of jellyfish

Phyllorhiza punctata is a species of jellyfish, also known as the floating bell, Australian spotted jellyfish, brown jellyfish or the white-spotted jellyfish. It is native to the western Pacific from Australia to Japan, but has been introduced widely elsewhere. It feeds primarily on zooplankton. P. punctata generally can reach up to 50 centimetres (20 in) in bell diameter, but in October 2007, one 74 cm (29 in) wide, perhaps the largest ever recorded, was found on Sunset Beach, North Carolina.

<i>Cotylorhiza</i> Genus of jellyfishes

Cotylorhiza is a genus of true jellyfish from the family Cepheidae. The genus is found in the central-east Atlantic, Mediterranean, and western Indian Ocean.

<span class="mw-page-title-main">Cannonball jellyfish</span> Species of jellyfish

The cannonball jellyfish, also known as the cabbagehead jellyfish, is a species of jellyfish in the family Stomolophidae. Its common name derives from its similarity to a cannonball in shape and size. Its dome-shaped bell can reach 25 cm (10 in) in diameter. The rim is often colored with brown pigment. There are several known undescribed Stomolophus species found in the Pacific and South Atlantic that exhibit pale to blue pigment. They are genetically different from the individuals found in the North Atlantic - but are commonly misidentified as such. Underneath the body is a cluster of oral arms that extend out around the mouth. These arms function in propulsion and as an aid in catching prey. Cannonballs are prominent from North America's eastern seaboard to the Gulf of Mexico.

<span class="mw-page-title-main">Gelatinous zooplankton</span> Fragile and often translucent animals that live in the water column

Gelatinous zooplankton are fragile animals that live in the water column in the ocean. Their delicate bodies have no hard parts and are easily damaged or destroyed. Gelatinous zooplankton are often transparent. All jellyfish are gelatinous zooplankton, but not all gelatinous zooplankton are jellyfish. The most commonly encountered organisms include ctenophores, medusae, salps, and Chaetognatha in coastal waters. However, almost all marine phyla, including Annelida, Mollusca and Arthropoda, contain gelatinous species, but many of those odd species live in the open ocean and the deep sea and are less available to the casual ocean observer. Many gelatinous plankters utilize mucous structures in order to filter feed. Gelatinous zooplankton have also been called Gelata.

<span class="mw-page-title-main">Bacterioplankton</span> Bacterial component of the plankton that drifts in the water column

Bacterioplankton refers to the bacterial component of the plankton that drifts in the water column. The name comes from the Ancient Greek word πλανκτος, meaning "wanderer" or "drifter", and bacterium, a Latin term coined in the 19th century by Christian Gottfried Ehrenberg. They are found in both seawater and freshwater.

<span class="mw-page-title-main">Fishing down the food web</span>

Fishing down the food web is the process whereby fisheries in a given ecosystem, "having depleted the large predatory fish on top of the food web, turn to increasingly smaller species, finally ending up with previously spurned small fish and invertebrates".

<span class="mw-page-title-main">Planktivore</span> Aquatic organism that feeds on planktonic food

A planktivore is an aquatic organism that feeds on planktonic food, including zooplankton and phytoplankton. Planktivorous organisms encompass a range of some of the planet's smallest to largest multicellular animals in both the present day and in the past billion years; basking sharks and copepods are just two examples of giant and microscopic organisms that feed upon plankton. Planktivory can be an important mechanism of top-down control that contributes to trophic cascades in aquatic and marine systems. There is a tremendous diversity of feeding strategies and behaviors that planktivores utilize to capture prey. Some planktivores utilize tides and currents to migrate between estuaries and coastal waters; other aquatic planktivores reside in lakes or reservoirs where diverse assemblages of plankton are present, or migrate vertically in the water column searching for prey. Planktivore populations can impact the abundance and community composition of planktonic species through their predation pressure, and planktivore migrations facilitate nutrient transport between benthic and pelagic habitats.

<span class="mw-page-title-main">Jelly-falls</span> Marine carbon cycling events whereby gelatinous zooplankton sink to the seafloor

Jelly-falls are marine carbon cycling events whereby gelatinous zooplankton, primarily cnidarians, sink to the seafloor and enhance carbon and nitrogen fluxes via rapidly sinking particulate organic matter. These events provide nutrition to benthic megafauna and bacteria. Jelly-falls have been implicated as a major “gelatinous pathway” for the sequestration of labile biogenic carbon through the biological pump. These events are common in protected areas with high levels of primary production and water quality suitable to support cnidarian species. These areas include estuaries and several studies have been conducted in fjords of Norway.

<i>Chrysaora plocamia</i> Species of jellyfish

The South American sea nettle is a species of jellyfish from the family Pelagiidae. It is found from the Pacific coast of Peru, south along Chile's coast to Tierra del Fuego, and north along the Atlantic coast of Argentina, with a few records from Uruguay. Despite its common name, it is not the only sea nettle in South America. For example, C. lactea is another type of sea nettle in this region. Historically, C. plocamia was often confused with C. hysoscella, a species now known to be restricted to the northeast Atlantic. C. plocamia is a large jellyfish, up to 1 m in bell diameter, although most mature individuals only are 25–40 cm (10–16 in).

<i>Chrysaora chesapeakei</i> Species of jellyfish

Chrysaora chesapeakei is a sea nettle from the family Pelagiidae. It was shown to be a distinct species from Chrysaora quinquecirrha in 2017. Since then, it is also commonly known as the bay nettle. It is mainly found in the Chesapeake Bay and along the East Coast of the United States.

<span class="mw-page-title-main">Marine food web</span> Marine consumer-resource system

Compared to terrestrial environments, marine environments have biomass pyramids which are inverted at the base. In particular, the biomass of consumers is larger than the biomass of primary producers. This happens because the ocean's primary producers are tiny phytoplankton which grow and reproduce rapidly, so a small mass can have a fast rate of primary production. In contrast, many significant terrestrial primary producers, such as mature forests, grow and reproduce slowly, so a much larger mass is needed to achieve the same rate of primary production.

<span class="mw-page-title-main">Benthic-pelagic coupling</span> Processes that connect the benthic and pelagic zones of a body of water

Benthic-pelagic coupling are processes that connect the benthic zone and the pelagic zone through the exchange of energy, mass, or nutrients. These processes play a prominent role in both freshwater and marine ecosystems and are influenced by a number of chemical, biological, and physical forces that are crucial to functions from nutrient cycling to energy transfer in food webs.

References

  1. 1 2 3 Condon, Robert H.; Duarte, Carlos M.; Pitt, Kylie A.; Robinson, Kelly L.; Lucas, Cathy H.; Sutherland, Kelly R.; Mianzan, Hermes W.; Bogeberg, Molly; Purcell, Jennifer E.; Decker, Mary Beth; Uye, Shin-ichi (2013-01-15). "Recurrent jellyfish blooms are a consequence of global oscillations". Proceedings of the National Academy of Sciences. 110 (3): 1000–1005. Bibcode:2013PNAS..110.1000C. doi: 10.1073/pnas.1210920110 . ISSN   0027-8424. PMC   3549082 . PMID   23277544.
  2. 1 2 3 4 5 6 7 8 9 10 11 Condon, Robert H.; Graham, William M.; Duarte, Carlos M.; Pitt, Kylie A.; Lucas, Cathy H.; Haddock, Steven H. D.; Sutherland, Kelly R.; Robinson, Kelly L.; Dawson, Michael N.; Decker, Mary Beth; Mills, Claudia E. (2012-02-01). "Questioning the Rise of Gelatinous Zooplankton in the World's Oceans". BioScience. 62 (2): 160–169. doi: 10.1525/bio.2012.62.2.9 . hdl: 10072/48237 . ISSN   0006-3568.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Purcell, Jennifer E.; Uye, Shin-ichi; Lo, Wen-Tseng (2007-11-22). "Anthropogenic causes of jellyfish blooms and their direct consequences for humans: a review". Marine Ecology Progress Series. 350: 153–174. Bibcode:2007MEPS..350..153P. doi: 10.3354/meps07093 . ISSN   0171-8630.
  4. 1 2 3 4 5 6 7 Condon, Robert H.; Steinberg, Deborah K.; del Giorgio, Paul A.; Bouvier, Thierry C.; Bronk, Deborah A.; Graham, William M.; Ducklow, Hugh W. Jellyfish blooms result in a major microbial respiratory sink of carbon in marine systems. National Academy of Sciences. OCLC   811394885.
  5. 1 2 3 4 5 6 Duarte, Carlos M; Pitt, Kylie A; Lucas, Cathy H; Purcell, Jennifer E; Uye, Shin-ichi; Robinson, Kelly; Brotz, Lucas; Decker, Mary Beth; Sutherland, Kelly R; Malej, Alenka; Madin, Laurence (March 2013). "Is global ocean sprawl a cause of jellyfish blooms?" (PDF). Frontiers in Ecology and the Environment. 11 (2): 91–97. Bibcode:2013FrEE...11...91D. doi:10.1890/110246. hdl: 10072/55576 . ISSN   1540-9295.
  6. 1 2 Brotz, Lucas; Cheung, William W. L.; Kleisner, Kristin; Pakhomov, Evgeny; Pauly, Daniel (2012), Purcell, Jennifer; Mianzan, Hermes; Frost, Jessica R. (eds.), "Increasing jellyfish populations: trends in Large Marine Ecosystems", Jellyfish Blooms IV: Interactions with humans and fisheries, Developments in Hydrobiology, Springer Netherlands, pp. 3–20, doi: 10.1007/978-94-007-5316-7_2 , ISBN   9789400753167
  7. 1 2 3 4 5 6 7 8 9 10 11 12 Pitt, Kylie; Welsh, David; Condon, Robert (January 2009). "Influence of jellyfish blooms on carbon, nitrogen and phosphorus cycling and plankton production". Hydrobiologia. 616: 133–149. doi:10.1007/s10750-008-9584-9. S2CID   22838905.
  8. ↑ Lynam, Christopher P.; Gibbons, Mark J.; Axelsen, Bjørn E.; Sparks, Conrad A. J.; Coetzee, Janet; Heywood, Benjamin G.; Brierley, Andrew S. (2006-07-11). "Jellyfish overtake fish in a heavily fished ecosystem". Current Biology. 16 (13): R492–493. Bibcode:2006CBio...16.R492L. doi: 10.1016/j.cub.2006.06.018 . ISSN   0960-9822. PMID   16824906.
  9. 1 2 3 4 Masilamani, J; Jesudoss, K; Kanavillil, Nandakumar; Satpathy, K.K.; Nair, K; Azariah, J (2000-09-10). "Jellyfish ingress: A threat to the smooth operation of coastal power plants". Current Science. 79: 567–569.
  10. ↑ "Pembrokeshire Marine European Marine Site" (PDF). ukmpas.org. February 2009.
  11. 1 2 3 4 De Donno, Antonella; Idolo, Adele; Bagordo, Francesco; Grassi, Tiziana; Leomanni, Alessandro; Serio, Francesca; Guido, Marcello; Canitano, Mariarita; Zampardi, Serena; Boero, Ferdinando; Piraino, Stefano (2014-02-27). "Impact of Stinging Jellyfish Proliferations along South Italian Coasts: Human Health Hazards, Treatment and Social Costs". International Journal of Environmental Research and Public Health. 11 (3): 2488–2503. doi: 10.3390/ijerph110302488 . ISSN   1660-4601. PMC   3986988 . PMID   24583831.
  12. 1 2 3 Palmieri, M. G.; Barausse, A.; Luisetti, T.; Turner, K. (July 2014). "Jellyfish blooms in the Northern Adriatic Sea: Fishermen's perceptions and economic impacts on fisheries". Fisheries Research. 155: 51–58. doi:10.1016/j.fishres.2014.02.021.
  13. 1 2 3 4 5 6 7 Graham, William M.; Gelcich, Stefan; Robinson, Kelly L.; Duarte, Carlos M.; Brotz, Lucas; Purcell, Jennifer E.; Madin, Laurence P.; Mianzan, Hermes; Sutherland, Kelly R.; Uye, Shin-ichi; Pitt, Kylie A. (2014). "Linking human well-being and jellyfish: ecosystem services, impacts, and societal responses". Frontiers in Ecology and the Environment. 12 (9): 515–523. Bibcode:2014FrEE...12..515G. doi:10.1890/130298. hdl: 1912/6993 . ISSN   1540-9309.
  14. 1 2 3 4 5 Brodeur, Richard D.; Link, Jason S.; Smith, B. E.; Ford, M. D.; Kobayashi, D. R.; Jones, T. T. (2016). "Ecological and Economic Consequences of Ignoring Jellyfish: A Plea for Increased Monitoring of Ecosystems". Fisheries (in Spanish). 41 (11): 630–637. Bibcode:2016Fish...41..630B. doi:10.1080/03632415.2016.1232964. ISSN   1548-8446.
  15. ↑ "Eutrophication: Causes, Consequences, and Controls in Aquatic Ecosystems | Learn Science at Scitable". www.nature.com. Retrieved 2019-11-13.
  16. 1 2 3 4 5 6 7 Mills, Claudia E. (2001), "Jellyfish blooms: are populations increasing globally in response to changing ocean conditions?", Jellyfish Blooms: Ecological and Societal Importance, Springer Netherlands, pp. 55–68, doi:10.1007/978-94-010-0722-1_6, ISBN   9789401038355
  17. ↑ Opdal, Anders Frugård; Brodeur, Richard D.; Cieciel, Kristin; Daskalov, Georgi M.; Mihneva, Vesselina; Ruzicka, James J.; Verheye, Hans M.; Aksnes, Dag L. (2019-02-28). "Unclear associations between small pelagic fish and jellyfish in several major marine ecosystems". Scientific Reports. 9 (1): 2997. Bibcode:2019NatSR...9.2997O. doi: 10.1038/s41598-019-39351-7 . ISSN   2045-2322. PMC   6395749 . PMID   30816236.
  18. 1 2 3 Purcell, J.; Arai, M. (2001). Purcell, J. E; Graham, W. M; Dumont, H. J (eds.). "Interactions of pelagic cnidarians and ctenophores with fish: a review". Hydrobiologia. 541: 27–44. doi:10.1007/978-94-010-0722-1. ISBN   978-94-010-3835-5. S2CID   27615539.
  19. 1 2 3 Brodeur, R.D.; Sugisaki, H.; Hunt, G.L. Jr (2002). "Increase in jellyfish biomass in the Bering Sea: implications for the ecosystem". Marine Ecology Progress Series. 233: 89–103. Bibcode:2002MEPS..233...89B. doi: 10.3354/meps233089 .
  20. 1 2 3 Ruzicka, J.J.; Brodeur, R.D.; Emmett, R.L.; Steele, J.H.; Zamon, J.E.; Morgan, C.A.; Thomas, A.C.; Wainwright, T.C. (2012). "Interannual variability in the Northern California Current food web structure: changes in energy flow pathways and the role of forage fish, euphausiids, and jellyfish". Progress in Oceanography. 102: 19–41. Bibcode:2012PrOce.102...19R. doi:10.1016/j.pocean.2012.02.002.
  21. 1 2 3 4 Breitburg, Denise L.; Fulford, Richard S. (2006-10-01). "Oyster-sea nettle interdependence and altered control within the Chesapeake Bay ecosystem". Estuaries and Coasts. 29 (5): 776–784. Bibcode:2006EstCo..29..776B. doi:10.1007/BF02786528. ISSN   1559-2731. S2CID   12668801.
  22. 1 2 3 Blanchet, Marine; Pringault, Olivier; Bouvy, Marc; Catala, Philippe; Oriol, Louise; Caparros, Jocelyne; Ortega-Retuerta, Eva; Intertaglia, Laurent; West, Nyree; Agis, Martin; Got, Patrice (September 2015). "Changes in bacterial community metabolism and composition during the degradation of dissolved organic matter from the jellyfish Aurelia aurita in a Mediterranean coastal lagoon" (PDF). Environmental Science and Pollution Research. 22 (18): 13638–13653. Bibcode:2015ESPR...2213638B. doi:10.1007/s11356-014-3848-x. hdl: 10261/123987 . ISSN   0944-1344. PMID   25408076. S2CID   38622407.
  23. 1 2 Qu, Chang-Feng; Song, Jin-Ming; Li, Ning; Li, Xue-Gang; Yuan, Hua-Mao; Duan, Li-Qin; Ma, Qing-Xia (August 2015). "Jellyfish ( Cyanea nozakii ) decomposition and its potential influence on marine environments studied via simulation experiments". Marine Pollution Bulletin. 97 (1–2): 199–208. Bibcode:2015MarPB..97..199Q. doi:10.1016/j.marpolbul.2015.06.016. ISSN   0025-326X. PMID   26088540.
  24. 1 2 3 4 Sweetman, Andrew K.; Chelsky, Ariella; Pitt, Kylie A.; Andrade, Hector; van Oevelen, Dick; Renaud, Paul E. (2016-05-19). "Jellyfish decomposition at the seafloor rapidly alters biogeochemical cycling and carbon flow through benthic food-webs". Limnology and Oceanography. 61 (4): 1449–1461. Bibcode:2016LimOc..61.1449S. doi: 10.1002/lno.10310 . hdl: 10072/142821 . ISSN   0024-3590.
  25. 1 2 Tinta, Tinkara. Kogovšek, Tjaša. Turk, Valentina. Shiganova, Tamara. Mikaelyan, Alexander S. Malej, Alenka, 1948–. Microbial transformation of jellyfish organic matter affects the nitrogen cycle in the marine water column – A Black Sea case study. OCLC   938602678.{{cite book}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
  26. 1 2 3 West, Elizabeth Jane; Welsh, David Thomas; Pitt, Kylie Anne (2008), "Influence of decomposing jellyfish on the sediment oxygen demand and nutrient dynamics", Jellyfish Blooms: Causes, Consequences, and Recent Advances, Springer Netherlands, pp. 151–160, doi:10.1007/978-1-4020-9749-2_11, ISBN   9781402097485
  27. ↑ Chelsky, Ariella Pitt, Kylie A Ferguson, Angus JP Bennett, William W Teasdale, Peter R Welsh, David T (2016). "Decomposition of jellyfish carrion in situ: short-term impacts on infauna, benthic nutrient fluxes and sediment redox conditions". The Science of the Total Environment. 566–567. Netherlands : Elsevier BV: 929–937. Bibcode:2016ScTEn.566..929C. doi:10.1016/j.scitotenv.2016.05.011. hdl: 10072/100472 . OCLC   975338442. PMID   27285534.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  28. ↑ Briand, Frederic; Boero, Ferdinando (2001). "Gelatinous zooplankton outbreaks - an overview on jellyfish blooms". CIESM Monographs. 14: 5-17.
  29. ↑ Pauly, Daniel; Graham, William; Libralato, Simone; Morissette, Lyne; Deng Palomares, M. L. (2008-09-26). "Jellyfish in ecosystems, online databases, and ecosystem models". Hydrobiologia. 616 (1): 67–85. doi:10.1007/s10750-008-9583-x. ISSN   0018-8158. S2CID   12415790.
  30. ↑ Omori, M.; Nakano, Eiji (2001-01-05). "Jellyfish fisheries in southeast Asia". Hydrobiologia. 451: 19–26. doi:10.1023/A:1011879821323. S2CID   6518460.
  31. 1 2 Bosch-Belmar, Mar; Azzurro, Ernesto; Pulis, Kristian; Milisenda, Giacomo; Fuentes, Verónica; Kéfi-Daly Yahia, Ons; Micallef, Anton; Deidun, Alan; Piraino, Stefano (2017-02-01). "Jellyfish blooms perception in Mediterranean finfish aquaculture". Marine Policy. 76: 1–7. doi:10.1016/j.marpol.2016.11.005. ISSN   0308-597X.
  32. ↑ Baxter, Emily J.; Sturt, Michael M.; Ruane, Neil M.; Doyle, Thomas K.; McAllen, Rob; Harman, Luke; Rodger, Hamish D. (2011-04-07). "Gill Damage to Atlantic Salmon (Salmo salar) Caused by the Common Jellyfish (Aurelia aurita) under Experimental Challenge". PLOS ONE. 6 (4): e18529. Bibcode:2011PLoSO...618529B. doi: 10.1371/journal.pone.0018529 . ISSN   1932-6203. PMC   3072396 . PMID   21490977.
  33. 1 2 3 Ghermandi, Andrea; Galil, Bella; Gowdy, John; Nunes, Paulo A. L. D. (2015-02-01). "Jellyfish outbreak impacts on recreation in the Mediterranean Sea: welfare estimates from a socioeconomic pilot survey in Israel". Ecosystem Services. Marine Economics and Policy related to Ecosystem Services: Lessons from the World's Regional Seas. 11: 140–147. Bibcode:2015EcoSv..11..140G. doi:10.1016/j.ecoser.2014.12.004. ISSN   2212-0416.
  34. ↑ Condon, Robert H.; Steinberg, Deborah K. (2008-10-13). "Development, biological regulation, and fate of ctenophore blooms in the York River estuary, Chesapeake Bay". Marine Ecology Progress Series. 369: 153–168. Bibcode:2008MEPS..369..153C. doi: 10.3354/meps07595 . ISSN   0171-8630.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.