نتایج جستجو برای: during some decades ago
تعداد نتایج: 2915581 فیلتر نتایج به سال:
In this study, we aimed to examine the status and historical change of trawl fishing fleet in Foça Aegean Sea. The data study representing all actively working trawlers 1998-1999 2019 were collected through face-to-face interviews with trawler boat owners Foca. questionnaire consisted questions related characteristics vessels, activity, socio-demographics fishers, running costs, annual landings...
Kelp forests are critical habitats for temperate coasts that experiencing dramatic declines worldwide in recent decades. Yet, even though they often support wildlife populations of high socioeconomic value, the consequences kelp forest decline small-scale fisheries (SSFs) have received surprisingly little attention. Here, we take first step to fill this gap through local ecological knowledge (L...
We study the control of modulational instability and pattern formation in a nonlinear dissipative feedback system with a periodic modulation of the material refractive index. We use a one-dimensional photonic lattice in a single-mirror feedback configuration and identify three mechanisms for pattern control: bandgap suppression of instability modes, periodicity induced pattern modes, and orient...
We present some numerical results obtained from a simple individual-based model that describes clustering of organisms caused by competition. Our aim is to show that, even when a deterministic description developed for continuum models predicts no pattern formation, an individual-based model displays well-defined patterns, as a consequence of fluctuation effects caused by the discrete nature of...
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