Patricia Glibert | |
---|---|
Alma mater | Harvard University |
Scientific career | |
Institutions | University of Maryland |
Thesis | Uptake and remineralization of ammonium by marine plankton (1982) |
Doctoral students | Deborah Bronk |
Patricia Marguerite Glibert is a marine scientist known for her research on nutrient use by phytoplankton and harmful algal blooms in Chesapeake Bay. She is an elected fellow of the American Association for the Advancement of Science.
Glibert has an undergraduate degree from Skidmore College [1] and a master's degree from the University of New Hampshire, where she examined the movement of nutrients in an estuary. [2] Glibert moved to Harvard University for her Ph.D., which she earned in 1982 with a dissertation working on the uptake of ammonium by small marine organisms. [3] Following her Ph.D., Glibert was a postdoctoral researcher and scientist at Woods Hole Oceanographic Institution. In 1986 Glibert moved to the University of Maryland, where she was promoted to professor in 1993.
In 2020, Glibert was elected president-elect of the Association for the Sciences of Limnology and Oceanography (ASLO), and followed Roxane Maranger as president in 2022. [4]
Glibert's research centers on nutrients, phytoplankton, and harmful algal blooms, especially the connection between harmful algal blooms and nutrients. [5] She has conducted this research in multiple locations [6] including Shinnecock Bay, Long Island, [7] Florida Bay, [8] the Chesapeake Bay, [9] Kuwait Bay, [10] the Scotian Shelf, [11] the waters off Cape Cod, [12] and Chesapeake Bay. [13] She has examined the production and consumption of nitrogen, [14] the effect of temperature on nutrient uptake, [15] and the role of mixotrophy in nutrient use. [16] Her work includes investigations into nutrient cycling in model organisms including Trichodesmium, [17] Prorocentrum , [18] and Synechococcus. [19] [20] Glibert's research encompasses issues of climate change [21] and human impacts on the environment. [22] [23]
{{cite book}}
: CS1 maint: location missing publisher (link) CS1 maint: others (link)Glibert received an honorary doctorate from Linnaeus University in 2011, [24] and was elected a fellow of the American Association for the Advancement of Science in 2012. [25] She has also been named one of the top women professors in Maryland (2013), and is a sustaining fellow of the Association for the Sciences of Limnology and Oceanography (2016). [1]
Glibert describes herself as "one-half dual-career couple" [26] and is married to Todd Kana, a phytoplankton ecologist at the University of Maryland. [27] In 2016 they published Aquatic Microbial Ecology and Biochemistry: A Dual Perspective, a collection written by dual career couples who have collaborated on research in the field. [27] They have three children; Glibert's daughter was the first child born to a woman scientist at Woods Hole Oceanographic Institution. [26]
An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems. It is often recognized by the discoloration in the water from the algae's pigments. The term algae encompasses many types of aquatic photosynthetic organisms, both macroscopic multicellular organisms like seaweed and microscopic unicellular organisms like cyanobacteria. Algal bloom commonly refers to the rapid growth of microscopic unicellular algae, not macroscopic algae. An example of a macroscopic algal bloom is a kelp forest.
Phytoplankton are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater ecosystems. The name comes from the Greek words φυτόν, meaning 'plant', and πλαγκτός, meaning 'wanderer' or 'drifter'.
Eutrophication is a general term describing a process in which nutrients accumulate in a body of water, resulting in an increased growth of microorganisms that may deplete the water of oxygen. Eutrophication may occur naturally or as a result of human actions. Manmade, or cultural, eutrophication occurs when sewage, industrial wastewater, fertilizer runoff, and other nutrient sources are released into the environment. Such nutrient pollution usually causes algal blooms and bacterial growth, resulting in the depletion of dissolved oxygen in water and causing substantial environmental degradation.
The spring bloom is a strong increase in phytoplankton abundance that typically occurs in the early spring and lasts until late spring or early summer. This seasonal event is characteristic of temperate North Atlantic, sub-polar, and coastal waters. Phytoplankton blooms occur when growth exceeds losses, however there is no universally accepted definition of the magnitude of change or the threshold of abundance that constitutes a bloom. The magnitude, spatial extent and duration of a bloom depends on a variety of abiotic and biotic factors. Abiotic factors include light availability, nutrients, temperature, and physical processes that influence light availability, and biotic factors include grazing, viral lysis, and phytoplankton physiology. The factors that lead to bloom initiation are still actively debated.
The microbial food web refers to the combined trophic interactions among microbes in aquatic environments. These microbes include viruses, bacteria, algae, heterotrophic protists. In aquatic ecosystems, microbial food webs are essential because they form the basis for the cycling of nutrients and energy. These webs are vital to the stability and production of ecosystems in a variety of aquatic environments, including lakes, rivers, and oceans. By converting dissolved organic carbon (DOC) and other nutrients into biomass that larger organisms may eat, microbial food webs maintain higher trophic levels. Thus, these webs are crucial for energy flow and nutrient cycling in both freshwater and marine ecosystems.
Heterosigma akashiwo is a species of microscopic algae of the class Raphidophyceae. It is a swimming marine alga that episodically forms toxic surface aggregations known as harmful algal bloom. The species name akashiwo is from the Japanese for "red tide".
Monomictic lakes are holomictic lakes that mix from top to bottom during one mixing period each year. Monomictic lakes may be subdivided into cold and warm types.
The Trophic State Index (TSI) is a classification system designed to rate water bodies based on the amount of biological productivity they sustain. Although the term "trophic index" is commonly applied to lakes, any surface water body may be indexed.
The deep chlorophyll maximum (DCM), also called the subsurface chlorophyll maximum, is the region below the surface of water with the maximum concentration of chlorophyll. The DCM generally exists at the same depth as the nutricline, the region of the ocean where the greatest change in the nutrient concentration occurs with depth.
A harmful algal bloom (HAB), or excessive algae growth, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, mechanical damage to other organisms, or by other means. HABs are sometimes defined as only those algal blooms that produce toxins, and sometimes as any algal bloom that can result in severely lower oxygen levels in natural waters, killing organisms in marine or fresh waters. Blooms can last from a few days to many months. After the bloom dies, the microbes that decompose the dead algae use up more of the oxygen, generating a "dead zone" which can cause fish die-offs. When these zones cover a large area for an extended period of time, neither fish nor plants are able to survive. Harmful algal blooms in marine environments are often called "red tides".
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.
Nutrient pollution, a form of water pollution, refers to contamination by excessive inputs of nutrients. It is a primary cause of eutrophication of surface waters, in which excess nutrients, usually nitrogen or phosphorus, stimulate algal growth. Sources of nutrient pollution include surface runoff from farm fields and pastures, discharges from septic tanks and feedlots, and emissions from combustion. Raw sewage is a large contributor to cultural eutrophication since sewage is high in nutrients. Releasing raw sewage into a large water body is referred to as sewage dumping, and still occurs all over the world. Excess reactive nitrogen compounds in the environment are associated with many large-scale environmental concerns. These include eutrophication of surface waters, harmful algal blooms, hypoxia, acid rain, nitrogen saturation in forests, and climate change.
Aureoumbra lagunensis is a unicellular planktonic marine microalga that belongs in the genus Aureoumbra under the class Pelagophyceae. It is similar in morphology and pigments to Aureococcus anophagefferens and Pelagococcus subviridis. The cell shape is spherical to subspherical and is 2.5 to 5.0 μm in diameter. It is golden-coloured and is encapsulated with extracellular polysaccharide layers and has a single chloroplast structure with pigments.
The viral shunt is a mechanism that prevents marine microbial particulate organic matter (POM) from migrating up trophic levels by recycling them into dissolved organic matter (DOM), which can be readily taken up by microorganisms. The DOM recycled by the viral shunt pathway is comparable to the amount generated by the other main sources of marine DOM.
Patricia A. Wheeler is a retired American phycologist and oceanographer. She is known for her work physiology and ecology of marine phytoplankton and primary production in marine ecosystems.
Mary Jane Perry is an American oceanographer known for the use of optics to study marine phytoplankton.
Roxane Maranger is a professor at Université de Montréal and Canada Research Chair Tier I in Aquatic Ecosystem Science and Sustainability known for her research on the impact of humans on water quality in lakes. From July 2020 - July 2022, she served as the president of the Association for the Sciences of Limnology and Oceanography (ASLO).
Margaret Ruth Mulholland is professor at Old Dominion University known for her work on nutrients in marine and estuarine environments.
Susanne Menden-Deuer is an oceanographer and marine scientist known for her work on marine food webs, including their structure and function. As of 2022, she is president-elect of the Association for the Sciences of Limnology and Oceanography.
Hans W. Paerl is a Dutch American limnologist and a Kenan Professor of Marine and Environmental Sciences at the University of North Carolina – Chapel Hill (UNC-CH) Institute of Marine Sciences. His research primarily assesses microbially-mediated nutrient cycling, primary production dynamics, and the consequences of human impacts on water quality and sustainability in waters around the world.