Darwin's naturalization hypothesis (DNH) proposes that colonization is less likely when the colonizing species is related to members of the invaded community, because evolutionary closeness intensifies competition among species that share similar resources. Studies that have evaluated DNH from correlational evidence have yielded controversial results with respect to its occurrence and generalit...

Studies suggest that, unlike the situation in temperate lakes, high biomasses of omnivorous fish are maintained in subtropical and tropical lakes when they shift from a turbid phytoplankton-dominated state to a clear water macrophyte-dominated state, and the predation pressure on large-bodied zooplankton therefore remains high. Whether this reflects a higher degree of herbivory in warm lakes th...

The study analysed the niche breadth of nesting green turtles, Chelonia mydas, on Rocas Atoll, Brazil, through stable isotopes (δ15N and δ13C), comparing samplings egg yolk carapace collected from two groups (2017 2019). mean δ15N values in were 7.1‰ (2017) 6.8‰ (2019), 7.8‰ 7.3‰ respectively. For δ13C, -17.4‰ -17.5‰ (2019) yolk, -18.4‰ -17.9‰ carapace. results suggest herbi...

The landscape pattern of Daqing City, China has undergone a significant change during the last two decades as a result of rapid urbanization. A quantitative analysis describing the spatial fragmentation caused by urban sprawl from satellite images was presented on three dates: 1979, 1990, and 2000. Five landscape indices with supplementary ecological meanings were chosen to facilitate our exami...

introduction “green infrastructure” is a term that describes the abundance and distribution of natural features providing ecological services necessary for community wellbeing specially in urban areas where these are limited. green infrastructure is increasingly espoused by landscape conservation and metropolitan planning because it is an effective way to surrogate ecological network functions ...

Iran has mountainous landscapes and half of its surface is occupied by highlands. Moreover, Iran is an arid country and deserts are located at lower altitudes. Most metropolitan areas are positioned in mid-altitudes between mountain and desert. Cities grow upwardly toward the highlands under pressures of urbanization and desertification. Foothill ecotones are a zone between upland mountains and...

iran has mountainous landscapes and half of its surface is occupied by highlands. moreover, iran is an arid country and deserts are located at lower altitudes. most metropolitan areas are positioned in mid-altitudes between mountain and desert. cities grow upwardly toward the highlands under pressures of urbanization and desertification. foothill ecotones are a zone between upland mountains and...

Kelp forests have declined gradually all over the world. Understanding trophic structure of such a productive and diverse ecosystem is crucial for its restoration effective management. Few studies, however, focused on functional recovery kelp in process restoration. This study was conducted eastern coast Korea where bed with removal sea urchins. In addition to quantitative measurement using com...