Αποτελέσματα Αναζήτησης
3 Μαρ 2004 · Food webs are usually very complex and, in any one lake ecosystem, hundreds of different species can be involved. Because the available energy decreases at each trophic level, a large food base of primary producers (mostly plants) is necessary to support relatively few large fish.
- Chemical
The total amount of ions in the water is called the TDS...
- Light
Photosynthesis provides the food that supports much of the...
- Watersheds
In contrast, lakes fed primarily by inflowing streams or...
- Biological
A typical lake has distinct zones of biological communities...
- Chlorophyll
An in-depth microscopic enumeration of the dozens of species...
- Ecoregions
Figure 23. Observations of lake characteristics that are...
- Chemical
Algae form the base of the food chain in aquatic environments. Algal bloom — A heavy growth of algae in and on a body of water as a result of high nutrient concentrations. Alkalinity — The acid combining capacity of a (carbonate) solution, also describes its buffering capacity.
29 Ιουν 2000 · Our observations show that, within a lake, there can be seasonal differences of >4‰ in the δ 15 N of phytoplankton and 3–4‰ differences in δ 15 N base between the littoral and pelagic food ...
31 Οκτ 2023 · A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another; the levels in the food chain are producers, primary consumers, higher-level consumers, and finally decomposers.
In a detrital food chain, dead organic matter of plants and animals is broken down by decomposers, e.g., bacteria and fungi, and moves to detritivores and then carnivores. Food web offers an...
10 Ιουλ 2020 · Increasing water temperatures can act as a stressor that impacts the immune and physical responses of aquatic organisms, especially the cascading food chain network linking of plankton–invertebrates–fish communities.
However, as we shall see, the pelagic zone of a waterbody is closely linked to the more structurally complex littoral and benthic habitats, as well as to the microbial components of the food web. Before we dig deeper into these links, we will examine the intriguing roots of modern food web theory.
