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Chemical Ecology and Marine Biodiversity:Insights and Products from the Sea
Chemical Ecology Marine Biodiversity Insights and Products the Sea
2015/8/13
Tremendous attention has been focused on the loss of and threats to, terrestrial biodiversity. Until very recently (Norse, 1993), much less attention was devoted to marine biodiversity despite the fac...
In order to measure inputs, cycling, and loss of material in aquatic ecosystems, a wide range of compounds and analytical tools is now available. Biological markers are compounds, or groups of compoun...
Effects of chemical and physical conditions on hatching success of Bythotrephes longimanus resting eggs
Effects of chemica Bythotrephes longimanus resting eggs
2014/4/2
Dormant eggs of zooplankton are considered to be tolerant of harsh environmental conditions, yet lethal
thresholds of exposure have rarely been determined. We describe 3 yr of dose–response experimen...
Upwelling couples chemical and biological dynamics across the littoral and pelagic zones of Lake Tanganyika, East Africa
Upwelling couples chemical biological dynamics littoral and pelagic zones Lake Tanganyika East Africa
2014/4/16
We studied the effects of upwelling on nutrient and phytoplankton dynamics in the pelagic and littoral zones of Lake Tanganyika near Kigoma, Tanzania. During the dry season of 2004, a rise in the ther...
An evaluation of iron bioavailability and speciation in western Lake Superior with the use of combined physical, chemical, and biological assessment
An evaluation of iron bioavailability speciation in western Lake Superior use of combined physical chemical biological assessment
2014/4/18
An iron-dependent cyanobacterial bioreporter (Synechococcus strain KAS101) was used in unison with size-fractionated iron content (>0.45, <0.45, <0.02 μm), and chemical characterization of iron comple...
Physical, chemical, and microbial regimes in an anoxic fjord (Nitinat Lake)
Physical chemical microbial regimes anoxic fjord
2014/4/22
New observations of physical, biological, and chemical parameters were obtained between July 2003 and February 2005 in Nitinat Lake, British Columbia, a permanently anoxic seawater fjord. These observ...
Chemical defense of the red tide dinoflagellate Karenia brevis against rotifer grazing
Chemical defense red tide dinoflagellate Karenia brevis against rotifer grazing
2014/4/22
In order to test whether phytoplankton such as the red tide dinoflagellate Karenia brevis negatively affect rotifer grazers and what mechanisms are involved in these interactions, we conducted laborat...
A direct test of cyanobacterial chemical defense: Variable effects of microcystin-treated food on two Daphnia pulicaria clones
cyanobacterial chemical defense microcystin-treated food two Daphnia pulicaria clones
2014/4/22
To determine the direct effects of microcystin on the fitness of herbivorous zooplankton, we experimentally added microcystin-LR to freeze-dried cells of palatable Chlorella and fed these compound-tre...
Amphipod herbivory on the freshwater cyanobacterium Lyngbya wollei: Chemical stimulants and morphological defenses
Amphipod herbivory freshwater cyanobacterium Lyngbya wollei Chemical stimulants morphological defenses
2014/5/4
The freshwater cyanobacterium Lyngbya wollei forms dense mats in lentic systems throughout the southeastern United States and produces paralytic shellfish poisons (PSPs), such as saxitoxins, that coul...
Microscale mineralization pathways in surface sediments: A chemical sensor study in Lake Baikal
Microscale mineralization pathways surface sediments A chemical sensor study Lake Baikal
2014/5/4
We used an array of ion-selective electrodes (oxygen [O2], hydrogen [H+], carbonate [CO32-], calcium [Ca2+], ammonium [NH4+], and nitrate [NO3-]) with a micromanipulator to study mineralization proces...
A secondary chemical cue facilitates juvenile-adult postsettlement associations in red sea urchins
chemical cue facilitates juvenile-adult post settlement associations red sea urchins
2014/5/8
Responses to predator odors or chemical alarm cues or both from conspecifics in aquatic systems generally involve a single chemical cue. We report a secondary chemical cue, released by adult red sea u...
Induction of sexual reproduction in Brachionus plicatilis (Monogononta, Rotifera) by a density-dependent chemical cue
sexual reproduction Brachionus plicatilis Monogononta, Rotifera density-dependent chemical cue
2014/5/20
Induction of mixis (sexual reproduction) in rotifers of the genus Brachionus is believed to be triggered by a chemical that is released into the water and accumulates at high population densities. How...