Overexploitation of common-pool resources, resulting from uncooperative harvest behavior, is a major problem in many social-ecological systems. Feedbacks between user behavior and resource productivity induce non-linear dynamics in the harvest and the resource stock that complicate the understanding and the prediction of the co-evolutionary system. With an adaptive model constrained by data fro...

Prehistoric exploitation of marine mammals in the northeastern Pacific has been a subject of considerable attention since 1992 when Hildebrandt and Jones used an optimal foraging model to argue that when congregated in rookeries, seals and sea lions represent highly attractive resources vulnerable to overpredation. Using archaeofaunal data from sites along the Oregon and California coasts they ...

Michelia yunnanensis Franch., is a traditional ornamental, aromatic, and medicinal shrub that endemic to Yunnan Province in southwest China. Although the species has a large distribution pattern and is abundant in Yunnan Province, the populations are dramatically declining because of overexploitation and habitat destruction. Studies on the genetic variation and demography of endemic species are...

The ecological consequences of human-driven overexploitation and loss of keystone consumers are still unclear. In intertidal rocky shores over the world, the decrease of keystone macrograzers has resulted in an increase in the dominance of herbivores with smaller body (i.e., "mesograzers"), which could potentially alter community assembly and structure. Here, we experimentally tested whether me...

Overexploitation leads to the ecological extinction of many oceanic species. The depletion of historical abundances of large animals, such as whales and sea turtles, is well known. However, the magnitude of the historical overfishing of exploited invertebrates is unclear. The lack of rigorous baseline data limits the implementation of efficient management and conservation plans in the marine re...

© WILDLIFE BIOLOGY · 7:3 (2001) Almost half a century ago the main concepts underlying sustainable exploitation were devised in a series of remarkable papers (Schaefer 1954, Ricker 1954, Beverton & Holt 1957). These pioneering studies provided the framework for a series of sophisticated models and methods of analyses that make current fisheries management a highly advanced process (e.g. Hilborn...

The present review paper focuses on selected cases around the world of land subsidence phenomena caused by overexploitation aquifers. Land is closely related to human activity. In particular, development technology has led an exponential increase in industrial and agricultural production, as well extensive urbanization, mainly large cities. action those parameters, along with effects climate ch...

Indicators, for groundwater resources, have mostly been employed to define the present status and the degradation tendency, regarding both quantity (under- or overexploitation) and quality (natural and anthropic contamination). This work presents the application of indicators in order to draw a picture of the groundwater resources situation in the 22 Water Resource Management Units (WRMU) of th...