Terrestrial ecosystem - is a type of ecosystem found only on land forms. Six primary terrestrial ecosystems exist: tundra, taiga, temperate deciduous forest, tropical rain forest, grassland, deserts.

Umbrella Species (are species selected for making conservation-related decisions, typically because protecting these species indirectly protects the many other species that make up the ecological community of its habitat. Species conservation can be subjective because it is hard to determine the status of many species. With millions of species of concern, the identification of selected keystone species, flagship species, or umbrella species makes conservation decisions easier. Umbrella species can be used to help select the locations of potential reserves, find the minimum size of these conservation areas or reserves, and to determine the composition, structure, and processes of ecosystems)

Vulnerable ecosystems:

Three major dimensions of vulnerability are involved:

• exposure to stresses, perturbations, and shocks;
• the sensitivity of people, places, ecosystems, and species to the stress or perturbation, including their capacity to anticipate and cope with the stress;
• and the resilience of the exposed people, places, ecosystems, and species in terms of their capacity to absorb shocks and perturbations while maintaining function.

Most vulnerable to climatic change

Wildlife Corridor (is an area of habitat connecting wildlife populations separated by human activities or structures (such as roads, development, or logging). This allows an exchange of individuals between populations, which may help prevent the negative effects of inbreeding and reduced genetic diversity (via genetic drift) that often occur within isolated populations. Corridors may also help facilitate the re-establishment of populations that have been reduced or eliminated due to random events (such as fires or disease))

Xenotransplantation, or heterologous transplant, is the transplantation of living cells, tissues or organs from one species to another. Such cells, tissues or organs are called xenografts or xenotransplants.

Yellow Baboon (The natural range of this species covers central and eastern regions of Africa, stretching from Kenya and Tanzania to Zimbabwe and Botswana. Within this territory, the Yellow baboon occurs in thorn scrubs, savannahs, open woodlands and gallery forests)

Calling it a night......................

Zebras have a wide range in east and southern Africa. They usually live in treeless grasslands and savanna woodlands and are absent from deserts, rain forests, and wetlands. This species' habitat is shrinking, however, and they are now extinct in Burundi and Lesotho.

Round 4 ...

Abiotic factors

The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers

Competitive Exclusion Principle (In ecology, the competitive exclusion principle, sometimes referred to as Gause's law, is a proposition named for Georgy Gause that two species competing for the same limited resource cannot coexist at constant population values. When one species has even the slightest advantage over another, the one with the advantage will dominate in the long term. This leads either to the extinction of the weaker competitor or to an evolutionary or behavioral shift toward a different ecological niche. The principle has been paraphrased in the maxim "complete competitors can not coexist")