Results 61 to 70 of about 4,587,043 (101)

Increased anoxia following species invasion of a eutrophic lake

open access: yesLimnology and Oceanography Letters
Species invasions can disrupt aquatic ecosystems by re‐wiring food webs. A trophic cascade triggered by the invasion of the predatory zooplankter spiny water flea (Bythotrephes cederströmii) resulted in increased phytoplankton due to decreased ...
Robin R. Rohwer   +5 more
doaj   +1 more source

PLANKTON DYNAMICS [PDF]

open access: yes, 2008
Phytoplankton growth is controlled by the balance between reproduction and mortality. Phytoplankton reproduction is determined by environmental factors (such as temperature and pH) and by essential resources (such as light and nutrients). In my thesis, I
Striebel, Maren
core   +1 more source

Ecological relationships between phytoplankton communities at different spatial scales in European reservoirs: implications at catchment level monitoring programmes. [PDF]

open access: yes, 2009
Phytoplankton communities are structured by factors acting over temporal and spatial scales. Identifying which factors are driving spatial patterns in aquatic communities is the central aim of ecology.
Rui Cortes   +17 more
core   +1 more source

Marine phytoplankton primary production and ecophysiology using chlorophyll-A fluorescence [PDF]

open access: yes, 2007
Marine phytoplankton ecophysiological state and primary production measurements have typically been controversial due to potential impacts of measurement techniques.
Cosgrove, Jeffrey John
core  

Temporal and spatial variations in phytoplankton productivity in surface waters of a warm-temperate, monomictic lake in New Zealand [PDF]

open access: yes, 2010
Surface phytoplankton productivity measurements were carried out in morphologically complex Lake Rotoiti with the objective of defining variations between sites and seasons, and the dominant environmental drivers of these variations.
Pilditch, Conrad A.   +5 more
core   +1 more source

Phytoplankton induced changes of air bubble residence time in seawater [PDF]

open access: yes, 2005
Air bubbles in the ocean, naturally induced by breaking waves or artificially entrained by ships, remain in the water for different periods of time. Knowledge of the factors accounting for the differences in air bubble residence time (BRT) is essential ...
Dauben, V.
core   +1 more source

Phytoplankton community and limnology of Chatla floodplain wetland of Barak valley, Assam, North-East India

open access: yesKnowledge and Management of Aquatic Ecosystems, 2013
Phytoplankton diversity was investigated over a period of two years (2006 to 2008) in Chatla floodplain wetland in Barak valley, Assam, North-East India.
Sultana Laskar H., Gupta S.
doaj   +1 more source

Evaluating a multispectral miniaturised fluorometer with three excitation channels for predicting phytoplankton community structure indices from BGC-Argo float observations [PDF]

open access: yesBiogeosciences
Phytoplankton community composition is a key determinant of ocean biogeochemical cycles, yet its observation from autonomous platforms remains challenging. In this study, we assessed the potential of in situ multispectral excitation fluorescence (MXF) to
F. Petit   +19 more
doaj   +1 more source

Environmental variables and plankton communities in the pelagic of lakes: enclosure experiment and comparative lake survey [PDF]

open access: yes, 2005
Most primary production of lakes and oceans occurs in the well-mixed surface layer that is subject to strong seasonal and geographical variation. With increasing mixed surface layer depth average light supply and specific nutrient supply decrease and so ...
Berger, Stella Angela
core   +1 more source

Iron biogeochemistry in (sub-) Polar waters [PDF]

open access: yes, 2009
Iron represents an important control on primary production in high nutrient low chlorophyll(HNLC) regimes and has received considerably attention during the last two decades.
Nielsdóttir, Maria Chun
core   +1 more source

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