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  2. Sacramento–San Joaquin River Delta - Wikipedia

    en.wikipedia.org/wiki/Sacramento–San_Joaquin...

    The increased presence of Microcystis aeruginosa blooms in the Delta represents a continual threat for species at multiple trophic levels. The lower trophic levels are affected from both reduced diversity as well as reduced numbers through competition. [33] [60] When the conditions are met Microcystis have the ability to dominate the lower ...

  3. Trophic level - Wikipedia

    en.wikipedia.org/wiki/Trophic_level

    The trophic level of an organism is the number of steps it is from the start of the chain. A food web starts at trophic level 1 with primary producers such as plants, can move to herbivores at level 2, carnivores at level 3 or higher, and typically finish with apex predators at level 4 or 5. The path along the chain can form either a one-way ...

  4. Ecological network - Wikipedia

    en.wikipedia.org/wiki/Ecological_network

    Trophic coherence: The tendency of species to specialise on particular trophic levels leads to food webs displaying a significant degree of order in their trophic structure, known as trophic coherence, [22] which in turn has important effects on properties such as stability and prevalence of cycles.

  5. Biomagnification - Wikipedia

    en.wikipedia.org/wiki/Biomagnification

    Thus, bioconcentration and bioaccumulation occur within an organism, and biomagnification occurs across trophic (food chain) levels. Biodilution is also a process that occurs to all trophic levels in an aquatic environment; it is the opposite of biomagnification, thus when a pollutant gets smaller in concentration as it progresses up a food web ...

  6. Bald eagles Jackie and Shadow keep tending to 3 eggs ... - AOL

    www.aol.com/bald-eagles-jackie-shadow-keep...

    These bald eagles have typically had eggs hatch after 38 to 39 days, Steers previously said. Jackie’s first egg was laid 47 days ago, as of March 12 — over a week beyond the time frame for it ...

  7. This Bald Eagle Nest Cam in California's Big Bear ... - AOL

    www.aol.com/lifestyle/bald-eagle-nest-cam...

    There are two main ways to join the pip watch: Visit Friends of Big Bear Valley's website, friendsofbigbearvalley.org, and open the Eagle Nest tab to view the 24/7 live stream, as well as read up ...

  8. Special young eagle soars high again after 9 months of ... - AOL

    www.aol.com/special-young-eagle-soars-high...

    After nine months of medical care, a young bald eagle was released Saturday morning back into the wild in northwestern Pennsylvania. Here's why. Special young eagle soars high again after 9 months ...

  9. Fishing down the food web - Wikipedia

    en.wikipedia.org/wiki/Fishing_down_the_food_web

    The mean trophic level is calculated by assigning each fish or invertebrate species a number based on its trophic level.The trophic level is a measure of the position of an organism in a food web, starting at level 1 with primary producers, such as phytoplankton and seaweed, then moving through the primary consumers at level 2 that eat the primary producers to the secondary consumers at level ...