Ecosystem Health Indicator
Ecosystem Health Indicator - Related Videos
06:12
Nest Building as an Indicator of Health and Welfare in Laboratory Mice
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Cited by 192 •
2013
We demonstrate the utility of nest building behavior in laboratory mice as an indicator of welfare. Nest scoring is a sensitive technique that is altered by temperature, illness, and aggression. The time to integrate into nest test (TINT) is a simple cage-side assessment that can detect postoperative pain.
01:17
What is an Ecosystem?
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2019
Overview An ecosystem is the interaction between all abiotic and biotic factors in an environment and can be classified as terrestrial or aquatic. Terrestrial ecosystems are categorized based on the climate, including annual temperature, rainfall, and seasonality. Aquatic ecosystems are separated further into freshwater and marine, and then by depth, which influences water temperature and the amount of sunlight that penetrates the water. Terrestrial Ecosystems Terrestrial ecosystems are...
07:07
Quantification of the Respiratory Burst Response as an Indicator of Innate Immune Health in Zebrafish
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Cited by 16 •
2013
The innate immune response protects organisms against pathogen infection. A critical component of the innate immune response, the phagocyte respiratory burst, generates reactive oxygen species that kill invading microorganisms. We describe a respiratory burst assay that quantifies reactive oxygen species produced when the innate immune response is chemically induced.
02:39
Indicators
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2020
Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are called...
10:48
Nutrients in Aquatic Ecosystems
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Nitrogen and phosphorus are essential plant nutrients found in aquatic ecosystems and both are monitored as a part of water quality testing because in excess amounts they can cause significant water quality problems. Nitrogen in water is measured as the common form nitrate (NO3-) that is dissolved in water and readily absorbed by photosynthesizers such as algae. The common form of phosphorus measured is phosphate...
FAQs
Measurements become meaningful when researchers compare them with reference conditions or established benchmarks. This comparison shows whether observed species diversity, population abundance, water quality, nutrient levels, or habitat structure differs from an expected or accepted state. The resulting contrast helps distinguish relatively stable conditions from ecological change that may require investigation or management action.
Each indicator category reveals a different aspect of ecosystem functioning. Biological measures can show changes in species diversity or abundance, chemical measures can identify altered water quality or nutrient levels, and physical measures can describe habitat structure. Considering these evidence types together provides a broader assessment than relying on one measurement alone.
Changes in indicator values can provide evidence of pollution, habitat loss, or climate-related stress. They may also show whether an ecosystem is recovering after restoration. Tracking these patterns over time connects measurable changes in organisms, environmental conditions, or habitat features with broader questions about ecological condition and the pressures affecting the system.
A monitoring workflow begins by selecting measurable biological, chemical, or physical features relevant to the ecosystem, such as water quality, nutrient levels, species diversity, population abundance, or habitat structure. Researchers then measure those features, compare results with reference conditions or benchmarks, and track changes over time to identify deterioration, stability, or recovery.
Indicator results give conservation and resource managers evidence for evaluating ecological change and identifying conditions that may need attention. Repeated measurements can show whether ecosystem characteristics are improving, declining, or recovering. This information supports decisions about management priorities and helps connect environmental observations with practical efforts to protect ecosystems and their resources.
Researchers and decision-makers can compare indicator measurements collected before and after a policy or restoration effort, using reference conditions or established benchmarks as context. Changes in species, water quality, nutrient levels, population abundance, or habitat structure can then indicate whether ecological conditions are moving toward recovery. Results also help communicate outcomes to communities.