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APA 2001 Conference
APA 2001 Conference

... L8 Biotope ...
Ecosystem and Ecology Powerpoint
Ecosystem and Ecology Powerpoint

... Every population has a different place to live and a different role to play in an ecosystem. Habitat: the place in which an organism lives and obtains the ...
2 Flow of Energy
2 Flow of Energy

... Consumers are organisms that depend on other organisms for food. They take in organic molecules by essentially “eating” other living things. They include all animals and fungi. (Fungi don’t really “eat”; they absorb nutrients from other organisms.) They also include many bacteria and even a few plan ...
Chapter 12: Marine life and the marine environment
Chapter 12: Marine life and the marine environment

... Marine reptiles ...
deflected succession
deflected succession

... compete for exactly the same resources for an extended period of time. (G.F. Gause) • One will either migrate, become extinct, or partition the resource and utilize a sub-set of the same resource. • Given resource can only be partitioned a finite number of times. ...
Jeopardy
Jeopardy

... The 10 percent rule limits population sizes in an ecosystem, since only about 10 percent of energy is transferred between trophic levels. (The rest of the energy is lost as waste/heat.) Since only 10 percent of energy is transferred, each trophic level has about 1/10th the population size of the pre ...
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Biodiversity, Scale and Ecological Resilience
Biodiversity, Scale and Ecological Resilience

... Biosphere, Biogeochemical cycles, Solar Energy, Biodiversity, Earth Materials ...
NOTES ON BIO 201 – GENERAL ECOLOGY INTRODUCTION
NOTES ON BIO 201 – GENERAL ECOLOGY INTRODUCTION

... set of BIOTIC and ABIOTIC conditions in which a species is able to persist and maintain stable population sizes. Two issues are recognizable from this definition (a) functional role of an organism (b) its position in time and space. ...
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... • Wetlands throughout the world have long been recognized as key habitats that provide many services to humankind. Unfortunately many of these services are not well recognized and are often taken for granted. ...
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... Water or hoglouse – related to woodlouse, these live at the bottom of the pond feeding on dead organic matter. Water louse carry their eggs and small young on their tummies. Freshwater shrimp – smaller freshwater species of marine shrimps. They belong to the decapods as they have ten legs. Molluscs ...
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File - thebiotutor.com

... minerals and energy that then become available to other living organisms in that ecosystems. o Saprotrophs  Secrete enzymes onto the dead organic matter, digestion takes places outside the decomposer and the digested material is then take in by the decomposer, although some remains in the ecosystem ...
Untitled
Untitled

... are grouped according to their role and illustrated in a Trophic level pyramid. The first level (base) contains groups of producers, then the second levels are made up of mainly herbivore secondary consumers and the levels that follow consists of tertiary consumers that eat the herbivores and so on. ...
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... Figure 1: An example of a marine pelagic food web. Credit: From "Fishing down marine food webs' secondary consumers. Energy is lost as it as an integrative concept" by Daniel Pauly (University of British Columbia, Canada), Proceedings of moves from one trophic level to the next. the EXPO'98 Conferen ...
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Lecture 29: Biodiversity Tropics vs. Temperate vs. Polar

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27th Annual Conference Applied Limnology

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(Hg) Concentrations in the Blacktip Shark
(Hg) Concentrations in the Blacktip Shark

... 2003). In the same study the researcher did statistically find high levels of mercury in neonatal and juvenile sharks that parent female sharks likely pass on high levels of (Hg) through the maternal fluid exchange (Adams et al. 2003). A study should be done to conclude the lifetime fluctuations in ...
< 1 ... 75 76 77 78 79 80 81 82 83 ... 179 >

Lake ecosystem

A lake ecosystem includes biotic (living) plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions.Lake ecosystems are a prime example of lentic ecosystems. Lentic refers to stationary or relatively still water, from the Latin lentus, which means sluggish. Lentic waters range from ponds to lakes to wetlands, and much of this article applies to lentic ecosystems in general. Lentic ecosystems can be compared with lotic ecosystems, which involve flowing terrestrial waters such as rivers and streams. Together, these two fields form the more general study area of freshwater or aquatic ecology. Lentic systems are diverse, ranging from a small, temporary rainwater pool a few inches deep to Lake Baikal, which has a maximum depth of 1740 m. The general distinction between pools/ponds and lakes is vague, but Brown states that ponds and pools have their entire bottom surfaces exposed to light, while lakes do not. In addition, some lakes become seasonally stratified (discussed in more detail below.) Ponds and pools have two regions: the pelagic open water zone, and the benthic zone, which comprises the bottom and shore regions. Since lakes have deep bottom regions not exposed to light, these systems have an additional zone, the profundal. These three areas can have very different abiotic conditions and, hence, host species that are specifically adapted to live there.
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