Estuarine benthic species are often the main prey for commercially important fish predators such as in our case study, making it important to monitor the aquatic habitat interfaces taking into consideration the estuarine macrobenthos and groundwater availability in the system....
The term “indicator species” has three distinct meanings. They are a species, or group of species, that reflect the biotic or abiotic state of an environment; reveal evidence for, or the impacts of, environmental change; or indicate the diversity of other species, taxa, or entire communities...
2.The faulted structure,hydrothermal alteration,gossan,geophysical-geochemical exploration anomalies are comprehensive ore-huntingindicators. 断裂构造、热液蚀变、铁帽、物化探异常为重要找矿标志。 3.Gold prices are often seen as anindicatorof inflation. ...
In cooking, ingredients are often measured to ensure the right quantities. 5 Can measures be subjective? While measures aim for objectivity, some, like measures of satisfaction, can have subjective elements. 4 indicator or measure? Both are valuable; indicators often guide the need for measures, ...
a substance often used in a titration to indicate the point at which the reaction is complete. Ecology.a plant, animal, or species that indicates, by its presence in a given area, the existence of certain environmental conditions. Discover More ...
Environmental impact assessments are often followed by the continuous monitoring needed to determine com- munity change. This long-term monitoring can be time-consuming and expensive. The concept of indicator species attempts to use their presence in a sample or area to characterise a certain degree...
The main factors threatening xerothermic grasslands of the Ch臋ciny district are, among others, the devastation and disappearance of natural habitats, often as a result of inappropriate human land management as well as the pollution of air, water, and soil. The effective protection of rare, ...
Figure 20.4.2 The excitation spectra of double-labeled fluorescein–tetramethylrhodamine dextran (D1951), which contains pH-dependent (fluorescein) and pH-independent (tetramethylrhodamine) dyes.(Top) Lipophilic pH Indicators Measurement of the pH adjacent to membrane surfaces is often complic...
However, ecological community data present a distinct problem because current statistical methods used for identifying thresholds were not developed for analysis of multiple, individual species abundances. We developed a new method, Threshold Indicator Taxa ANalysis (TITAN), specifically to deal with some...
a.a plant or animal species that thrives only under particular environmental conditions and therefore indicates these conditions where it is found b.a species of plant or animal whose well-being confirms the well-being of other species in the area ...