http://wiki.answers.com/Q/What_is_the_main_abiotic_factor_that_distinguishes_primary_from_secondary_succession"
See Ecosystems, also related answers re primary succession.
Primary and secondary succession differ in terms of previous colonization of a habitat.
starting materials
starting materials
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Takes place in bare rocks
simple. Ecological succession is the phenomenon or process by which an ecological community undergoes more or less orderly and predictable changes following disturbance or initial colonization of new habitat. While ecological backlash,involves the counter-responses of pest populations or other biotic factors in the environment that diminish the effectiveness of pest management tactics.
factors are
Environmental factors that affect Hotels
4 abiotic factors are a couch tv
There are 3 very big factors that can have a major effect on soil erosion. These factors are water, ice, and wind.
Primary succession is one of two types of ecological succession and biological succession of plant life, and occurs in an environment in which new substrate, devoid of vegetation and usually lacking soil, is deposited (for example a lava flow). (The other type of succession, secondary succession, occurs on substrate that previously supported vegetation before a disturbance destroyed the plant life.) In primary succession pioneer species like mosses, lichen, algae and fungus as well as other abiotic factors like wind and water start to "normalize" the habitat.
Primary succession starts in a virtually lifeless area where the soil has not yet formed due to environmental factors, such as on a new volcanic island or on the rubble (also called moraine) left behind by retreating glaciers.
Secondary succession and ecosystems
Primary succession occurs when pioneer species of vegetation take hold in an area devoid of previous growth and sometime soil. Examples would be an area covered by lava or an area left by a retreating glacier. The pioneer species add layers of soil over time through decomposition and "normalize" the environment for other species to follow. Secondary succession occurs when an area is significantly reduced in vegetation species, such as occurs during a flood or fire. Soil is still present and so may be seeds, roots, and other underground vegetative organs of the previous inhabitants.
Secondary succession begins in an area where the natural community has been disturbed. Example: Annual weeds --> perennial weeds and grasses --> shrubs & pine seedlings --> young pine forest with developing understory of hickory & oak trees --> mature oak-hickory forest 1. Water, temperature, & soil minerals are examples of abiotic factors that can influence plant (producer) growth, which primary producers (e.g. rabbit) rely on as a food source. A secondary consumer (e.g. coyote) then eats the primary consumer. So changes in any of the abiotic factors listed above will ultimately affect the coyote population. 2. New environmental conditions allow one group of species in a community to replace other groups. Succession involves species competing for enough light, nutrients and space which will influence it's trajectory.
The primary determing factor would be the size of the substance
Primary Lymphoedema - Abnormality's of the structures within the lymphatic system usually caused from genetic factors (Milroys Disease, Lymphoedema Praecox, Lymphoedema Tarda) Secondary Lymphoedema - Is acquired due to external or environmental factors (Filariasis, Surgery, Radiotherapy, Trauma, Infections)
The process succession is affected by various factors. The ecosystem and the different species available mainly affect succession.
The process succession is affected by various factors. The ecosystem and the different species available mainly affect succession.
Primary hemostasis is the overall sequence of events that leads to the formation of a platelet plug, while Secondary hemostasis is the signal transduction pathway that leads to the formation of fibrin. Secondary Hemostasis is always a part of Primary hemostasis, but involves many clotting factors and other signaling molecules that are specific to the formation of fibrin
abandoned fields or forest clearings
chris was here