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Effects of Three Substrate Variables on Two
Effects of Three Substrate Variables on Two

... Structural design of Twin Barges provided a uniform horizontal profile 1.25 m above the bottom on each reef. Differences in vertical relief of the barges were created by anchoring 10 midwater structures approximately 8 m in length to Inshore Barge on 28 August 1979. Each midwater structure consisted ...
This is an electronic reprint of the original article. This reprint may
This is an electronic reprint of the original article. This reprint may

... of the fish host, Perca fluviatilis L. (Faltýnková et al. 2009). If any of the hosts—the bird, the snail or the fish—should either increase or decrease in abundance due to environmental changes, this would impinge on the transmission of the parasite and consequently on its abundance in the hosts. ...
Trophic structure patterns of Brazilian reef fishes
Trophic structure patterns of Brazilian reef fishes

Role of pelagic crustaceans in the diet of the longnose lancetfish
Role of pelagic crustaceans in the diet of the longnose lancetfish

... in Season B respectively, nA,i and nB,i the number of individuals that use resource i in Season A and in Season B respectively, and NA and NB the total number of individuals in both seasons. C and Cmh range from 0 (no prey in common) to 1 (complete overlap). Bootstrapping techniques based on 500 rep ...
The State of South Africa`s Biodiversity 2012
The State of South Africa`s Biodiversity 2012

... the species that we find in them, share the same ancient historic roots as every South African. This beautiful publication captures the essence of an inheritance so worthy of celebration. And it offers the information and inspiration we need in order to make better decisions about how we use, manage ...
modeling the role of primary productivity disruption in end
modeling the role of primary productivity disruption in end

... making the genus level a more conservative estimate of taxonomic diversity. The fauna includes one bivalve genus, one conchostracan, seven fish, 54 tetrapods, and 40 insects, which were binned into a total of 17 guilds (lists of taxa in each guild available from KDA upon request). Tetrapods were div ...
Repeated evolution of amphibious behavior in fish and its
Repeated evolution of amphibious behavior in fish and its

... published literature. These examples were then positioned onto a phylogeny to obtain a broad view of the phylogenetic diversity of amphibious behavior across all fishes and how frequently amphibious behavior might have evolved in fish. Second, the ecology of amphibious fish was then compared to all ...
Bromeliad Dwellers
Bromeliad Dwellers

Western Subarctic Gyre - North Pacific Marine Science Organization
Western Subarctic Gyre - North Pacific Marine Science Organization

... The most abundant epipelagic nekton species were Pacific salmon, followed by Pacific saury, Atka mackerel, Pacific pomfret, and blue shark (based on surface gillnet sampling). Neon flying squid, boreal clubhook squid, and boreopacific gonate squid were abundant squid species. ...
Rhododendron in Snowdonia - Snowdonia National Park Authority
Rhododendron in Snowdonia - Snowdonia National Park Authority

... Snowdonia National Park and the surrounding regions are defined by upland habitats, where both moorland and heathland is widespread in areas such as the Migneint, the Berwyn Mountains and Mynydd Hiraethog, all of which are protected under either national or European law due to their ecological impor ...
Trophic ecology of two sympatric lizard species: the
Trophic ecology of two sympatric lizard species: the

... Understanding the ecology of species is a necessary condition for the proper management and preservation of natural sites. In this context, food resources are a critical parameter to consider in conservation biology (Tatin et al. 2013). Among the three classic dimensions of the niche (diet, space, a ...
Post-Tour Classroom Activities
Post-Tour Classroom Activities

... 2. Wetlands are connected to all parts of the water cycle. 3. Wetlands soils are special both in the way they capture runoff and sediments and in how they develop over time to sustain wetland habitat. 4. Plants and animals in Great Salt Lake wetlands have fascinating adaptations that allow them to t ...
atoll research bulletin no. 583 coral reef framework
atoll research bulletin no. 583 coral reef framework

... cavities, with a consequent decrease in crustose coralline algae in the same direction, but there was no other relation between light and distribution of organisms. Water motion and turbidity, generally less in cavities than on the open reef, were significantly related to biotic distribution. Inside ...
Does a warmer climate with frequent mild water shortages
Does a warmer climate with frequent mild water shortages

... not available to shallow-rooted species (Berendse 1982). In case of an extreme drought, greater complementarity of species-rich communities will determine the use of a larger part of the available water and consequently maintain productivity longer as compared to monocultures of the individual speci ...
Food-web theory provides guidelines for marine
Food-web theory provides guidelines for marine

... defied limitation. Unfortunately, this old presumption turned out to be terribly wrong as technological advancement reduced the world’s oceans to mortal size by amplifying man’s inputs (pollution) and magnifying his outputs (fishing). And the fact of this magnification combined with evidence of man’ ...
Herbicide Trials for the control of submerged aquatic weeds
Herbicide Trials for the control of submerged aquatic weeds

successional mechanism varies along a gradient in hydrothermal
successional mechanism varies along a gradient in hydrothermal

... flux), as well as species’ interactions with each other. Because it is important to distinguish between these mechanisms (e.g., Callaway and Walker 1997), we monitored both hydrothermal vent fluid flux (using temperature as a proxy; Johnson et al. 1988, 1994) and the ambient faunal community through ...
Du Toit Johan Truter 1988-002
Du Toit Johan Truter 1988-002

... elephants (Loxodonta ...
Nutritional Ecology of Aquatic Detritivorous Insects
Nutritional Ecology of Aquatic Detritivorous Insects

... and a water body is slow to heat up or cool down, such that diel fluctuations are lessened. The variable nature of dissolved chemicals and oxygen-consuming materials in lakes or streams has physiological implications regarding both osmoregulation and respiration. Aquatic organisms have to contend wi ...
Above and below ground impacts of terrestrial mammals
Above and below ground impacts of terrestrial mammals

... a group to forest fragmentation and degradation. This trophic group preys upon consumers of both above and belowground food webs and thus has a strong potential for indirectly altering ecosystem processes such as herb layer herbivory and nutrient turnover in rain forest (Sekercioglu 2006). Alternati ...
Predicting ecological consequences of marine top predator declines
Predicting ecological consequences of marine top predator declines

Predicting ecological consequences of marine top predator
Predicting ecological consequences of marine top predator

Red swamp crayfish - Pennsylvania Sea Grant
Red swamp crayfish - Pennsylvania Sea Grant

Studying mudfishes s - Department of Conservation
Studying mudfishes s - Department of Conservation

... Mudfish will readily accept dead food such as frozen bloodworms. These are available from most aquarium suppliers. More aquarium fish die from overfeeding than from any other single cause. Mudfish should only be fed ...
2014 Lake Winnebago Bottom Trawling Assessment_Final
2014 Lake Winnebago Bottom Trawling Assessment_Final

... after hatching, but walleye fry need a good available source of zooplankton for food to survive once the yolk sac has been absorbed. The spring of 2014 was cooler than normal, resulting in below average water temperatures. Poor zooplankton hatches in the spring often coincide with cool water tempera ...
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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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