I joined in the project for the fieldwork and was stung by mosquitos of many different rivers. Most of the tiny mussels are swept away never to be seen again, but those that are inhaled by a trout, close their shells, hold onto the gills of the fish and live as parasites from their blood cycle. When the water gets warmer in the next spring, the now a little larger mussels let go of the gills and let themselves sink to the bottom and bury themselves into the sandy ground. They grow very slowly and, depending on the environmental circumstances, they can get years old!
Arctic LTER Research | Arctic Long Term Ecological Research
Zooplankton adaptation to climate change Global change places organisms under enormous pressure by radically changing the environment in which they live. Those shifts in abiotic conditions induce physiological acclimatization and genetic adaptations in populations which dampens the influence of new environmental settings on population dynamics and allows species to persist. Tasks This project will therefore investigate the effects of global change on zooplankton population dynamics and the associated evolutionary responses. We hypothesise that 1 with increasing strength of abiotic changes the selective pressure will also increase which could in turn decrease the genetic diversity of populations over time.
An ecosystem is an entire group of living forms and the nonliving materials of the corresponding environment. Accordingly, its parts incorporate plants, animals, and several other microorganisms, soil, rocks, and minerals. Ecosystems encompass water sources and the nearby environment, and the extent of environments changes hugely. Even the body of a creature could be viewed as a biological community, since it is home to various microorganisms.
The Southern Ocean is one of the most inhospitable places on Earth, yet it is the home of a diverse and fascinating community of organisms. Many marine diatoms such as Fragilariopis cylindrus not only survive but thrive in these waters and their associated sea ice. Their success underpins a unique food web involving great populations of krill, penguins, seals and whales. Cover image: James A.
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