Now showing items 1-10 of 306
Ecosystem biogeochemistry considered as a distributed metabolic network ordered by maximum entropy production
We examine the application of the maximum entropy production principle for describing ecosystem biogeochemistry. Since ecosystems can be functionally stable despite changes in species composition, we utilize a distributed ...
Long-term studies of the marine ecosystem along the west Antarctic Peninsula
Articles in this volume focus on longer-term studies of the marine ecosystem of the continental shelf west of the Antarctic Peninsula, principally by the Palmer, Antarctica Long- Term Ecological Research project (Ross ...
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Contributions of long-term research and time-series observations to marine ecology and biogeochemistry
Time-series observations form a critical element of oceanography. New interdisciplinary efforts launched in the past two decades complement the few earlier, longer-running time series in building a better, though still ...
Runoff sources and land cover change in the Amazon : an end-member mixing analysis from small watersheds
The flowpaths by which water moves from watersheds to streams has important consequences for the runoff dynamics and biogeochemistry of surface waters in the Amazon Basin. The clearing of Amazon forest to cattle pasture ...
Amazon deforestation alters small stream structure, nitrogen biogeochemistry and connectivity to larger rivers
Human activities that modify land cover can alter the structure and biogeochemistry of small streams but these effects are poorly known over large regions of the humid tropics where rates of forest clearing are high. We ...
Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska
(National Research Council Canada, 2004-12-23)
In many long-lived species such as Arctic grayling (Thymallus arcticus), population growth rate is most sensitive to changes in adult survival probabilities. Understanding the factors that regulate adult survival in this ...
The savory swimmer swims north : a northern range extension of the blue crab Callinectes sapidus?
Worldwide, climate-change is shifting species distributions poleward. Here I present recent (2012-2014) observations of the blue crab, Callinectes sapidus, in the Gulf of Maine (GoM), north of its historical range of Cape ...
Microbial biogeography along an estuarine salinity gradient : combined influences of bacterial growth and residence time
(American Society for Microbiology, 2004-03)
Shifts in bacterioplankton community composition along the salinity gradient of the Parker River estuary and Plum Island Sound, in northeastern Massachusetts, were related to residence time and bacterial community doubling ...
Fiddler on the roof : a northern range extension for the marsh fiddler crab Uca pugnax
A northern range extension is presented here for the marsh fiddler crab Uca pugnax. In summer 2014, adult crabs were found as far north as Hampton, New Hampshire (42.924428, -70.820517), which is 80 km north of its previously ...