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Ilia_Sergeevich [38]
3 years ago
10

What effects might climate change have on terrestrial ecosystems? What effects might there

Biology
2 answers:
avanturin [10]3 years ago
4 0

Answer:

Well,

Explanation:

Aquatic ecosystems are critical components of the global environment. In addition to being essential contributors to biodiversity and ecological productivity, they also provide a variety of services for human populations, including water for drinking and irrigation, recreational opportunities, and habitat for economically important fisheries. However, aquatic systems have been increasingly threatened, directly and indirectly, by human activities. In addition to the challenges posed by land-use change, environmental pollution, and water diversion, aquatic systems are expected to soon begin experiencing the added stress of global climate change.

“Aquatic Ecosystems and Global Climate Change” is the seventh in a series of reports examining the potential impacts of climate change on the U.S. environment. It details the likely impacts of climate change over the next century on U.S. aquatic ecosystems. Report authors, Drs. N. LeRoy Poff, Mark Brinson, and John Day, Jr. find:

Increases in water temperatures as a result of climate change will alter fundamental ecological processes and the geographic distribution of aquatic species. Such impacts may be ameliorated if species attempt to adapt by migrating to suitable habitat. However, human alteration of potential migratory corridors may limit the ability of species to relocate, increasing the likelihood of species extinction and loss of biodiversity.

Changes in seasonal patterns of precipitation and runoff will alter hydrologic characteristics of aquatic systems, affecting species composition and ecosystem productivity. Populations of aquatic organisms are sensitive to changes in the frequency, duration, and timing of extreme precipitation events, such as floods or droughts. Changes in the seasonal timing of snowmelt will alter stream flows, potentially interfering with the reproduction of many aquatic species.

Climate change is likely to further stress sensitive freshwater and coastal wetlands, which are already adversely affected by a variety of other human impacts, such as altered flow regimes and deterioration of water quality. Wetlands are a critical habitat for many species that are poorly adapted for other environmental conditions and serve as important components of coastal and marine fisheries.

Aquatic ecosystems have a limited ability to adapt to climate change. Reducing the likelihood of significant impacts to these systems will be critically dependent on human activities that reduce other sources of ecosystem stress and enhance adaptive capacity. These include maintaining riparian forests, reducing nutrient loading, restoring damaged ecosystems, minimizing groundwater withdrawal, and strategically placing any new reservoirs to minimize adverse effects.

Serggg [28]3 years ago
3 0

Answer:

Climate change can alter where said species live, interact with other species and each other, it also depends on the timing on the biological events that has occurred/occuring.

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Give a brief explanation of why food webs are preferred over food chains for representing the flow of energy in an ecosystem.
kow [346]

Answer AND Explanation:

Very often, one type of organism or species in an ecosystem happens to be the same food source for other types of consumers. The different food chains that exist in an ecosystem therefore form a complex network called food web.  Food webs are more complex than food chains and therefore there can be more than one primary producer thus increasing the flow of energy an ecosystem.

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2 years ago
1) A class collected water samples from a nearby pond and wants to observe the samples for
spayn [35]

Answer:

Compound light microscope

Explanation:

This is the ideal microscope because it requires the passage of  harmless beam of light through the specimen.Since the pond contain living creatures this is best to use.

C and D both require the transmission of beam of electrons through a sample. D depends on the reflection of the electron  after scanning the specimen surfaces and sent this to the lenses of the observer.(C)involved the  passing of the beam of electrons through the specimen the interaction of the electrons with the atoms in the specimen(,therefore in both cases  these specimens can not be wet and living.

The specimen should be dry in both cases and therefore non -living ,because the chamber for the specimen must be a vacuum,and living organism can not survive in the vacuum. Thus pond water can not be used as specimen because the specimen in the water but me be living.

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Luba_88 [7]

Answer: a food-growing practice that uses no synthetic fertilizers, insecticides, fungicides, or herbicides

Explanation:

Organic agriculture is a process of crops of economic importance. It is an integrated farming system that ensures the sustainability, enhances the fertility of the soil, and that is biological diversity.

It prohibits the use of synthetic pesticide or insecticides, fungicides, synthetic fertilizers, growth hormones, antibiotics, and genetically modified organisms for the growth of crops. It utilizes the fertilizers of organic origin, like manure, compost, bone meal and also supports the crop rotation. It supports the biological pest control and fostering of insect predators.  

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