Αποτελέσματα Αναζήτησης
26 Σεπ 2006 · Specifically, it is critically important to know whether sandeel abundance is controlled mainly bottom-up by food availability or top-down by predation or fisheries. With this goal, we analysed data on four trophic levels (phytoplankton, zooplankton, sandeel larvae, seabirds) collected concurrently in the NW North Sea over a 30-year period.
7 Οκτ 2024 · Explore the intricate connections within ocean food webs, highlighting the roles of diverse marine species from producers to top predators.
1 Φεβ 2019 · Made of interconnected food chains, food webs help us understand how changes to ecosystems — say, removing a top predator or adding nutrients — affect many different species, both directly and indirectly. Phytoplankton and algae form the bases of aquatic food webs.
Predators at the top level of the trophic pyramid include animals like sharks and dolphins. However, not all top marine predators live in the sea. The albatross is an important predator at the top of the marine food web in Otago. Humans are also top-level consumers in the marine food web.
29 Ιουλ 2019 · While the global connectivity of the metaweb suggests that marine food webs are robust, or persistent despite extinctions, we assess whether this is also true of local food webs.
11 Μαρ 2024 · Additionally, alternative pathways exist, involving other krill species, fish, and squid, which play equally important roles in connecting primary producers with top predators. Advantages and disadvantages of several techniques used to study Southern Ocean food-webs were identified, from the classical analyses of stomach contents, scats, or ...
4 Νοε 2019 · Marine top predators are often conspicuous and wide ranging, and integrate information from the bottom to the top of the food web. Such predators could act as “sentinels” of an ecosystem's response to climate variability and change.
