Science
BIO 2229 Troy University Aquatic Ecosystems & Temperature and Precipitation Discussion

BIO 2229

Troy University

BIO

Question Description

I’m trying to learn for my Ecology class and I’m stuck. Can you help?

1.Discuss how elevated temperature and precipitation could help and also hinder primary

production in autotrophic organisms. Compare primary productivity in at least four

community/biome types, and be sure to highlight both the most productive and least

productive areas; state contributing factors leading to high or low productivity. With a

focus on marine ecosystems, which are generally the most productive: coastal or open

oceanic environments? Also, with a focus on marine ecosystems, which is more

productive and why: tropical, open oceanic systems or temperate, open oceanic systems?

With respect to secondary productivity, discuss ecological pyramids based on numbers,

biomass, and energy. Out of the three, which shows the least bias, and why? What are

the generalizations concerning the different trophic levels in these pyramids, and what are

some problems that complicate the development and interpretation of these pyramids?

2.

Discuss aquatic ecosystems in terms of lotic and lentic types (as well as oligotrophic

and eutrophic conditions). Highlight the generalizations for each regarding such factors

as dissolved oxygen content and turbidity. Also, what affects pH in both types of

systems? Discuss various types (and examples) of feeders in these systems: shredders,

collectors, scrapers, piercers, and predators. Locally (in north Alabama and the southern

Appalachians), what two factors are potentially devastating to native trout populations?

Discuss the domino effect starting with the root causes and their effects regarding the

latter.

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Final Answer

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Running Head: LOTIC AND LENTIC AQUATIC ECOSYSTEMS

Lotic and Lentic Aquatic Ecosystems
Name
Institution Affiliations
Course Title
Date

1

LOTIC AND LENTIC AQUATIC ECOSYSTEMS

2

Aquatic ecosystems can be classified as either lotic or lentic based on the flow of water.
Lotic ecosystems refer to flowing water, such as creeks, streams, and runs, rivers, water channels,
and rivers. This continuous flow of water and entrained materials creates various habitats such as
riffles, glides, and pools. On the other hand, lentic Ecosystems have still waters. They include
water ponds, water basin marshes, ditched, lakes, reservoirs, and seeps. The major influence of
lotic systems is the unidirectional flow of water. Lotic ecosystems require light, necessary for
energy synthesis through photosynthesis and also provide refuge for the prey species in the
shadows it casts. The oxygen content of lentic ecosystems is however slightly lower than that of
lotic ecosystems since only a small portion of the ecosys...

lindsaysmith (7770)
Carnegie Mellon University

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