相关实验视频

Updated: May 30, 2025

Laboratory Protocol for Genetic Gut Content Analyses of Aquatic Macroinvertebrates Using Group-specific rDNA Primers
10:17

Laboratory Protocol for Genetic Gut Content Analyses of Aquatic Macroinvertebrates Using Group-specific rDNA Primers

Published on: October 5, 2017

8.8K

一个顶级捕食者的息地工程产生了跨越时间环境压力梯度的空间热带动态

Peter J Flood1, Bradley A Strickland1,2, Jeffrey L Kline2

  • 1Department of Biological Sciences and Institute of Environment, Florida International University, Miami, Florida, USA.

The Journal of animal ecology
|January 31, 2025
PubMed
概括

美国鱼工程池,创造重要的干旱季避难所,增强物种的共存. 他们的生态系统工程支持沿着环境压力梯度的生物多样性,与生态干扰理论保持一致.

关键词:
美国鱼鱼.底部向上效应是底部向上效应.干扰生态学 干扰生态学生态系统工程师生态系统工程师食物网是一种食物网.稳定的同位素是稳定的.胃中的内容.压力梯度假设压力梯度假设

更多相关视频

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter10:20

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter

Published on: March 12, 2013

13.3K
Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria07:25

Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria

Published on: July 20, 2017

11.5K

相关概念视频

Trophic Efficiency00:46

Trophic Efficiency

Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
20.3K
Predator-Prey Interactions02:39

Predator-Prey Interactions

Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
16.1K
Trophic Levels01:35

Trophic Levels

All organisms in an ecosystem occupy a trophic level in the food chain. The lowest level consists of primary producers, which synthesize their food from either solar or chemical energy. Each subsequent level obtains energy from the levels below. Detritivores can occupy any of the levels above primary producers.
30.6K
Habitat Fragmentation02:31

Habitat Fragmentation

Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
17.4K
Ecological Niches02:02

Ecological Niches

All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
23.5K
Keystone Species01:39

Keystone Species

Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...
21.5K