Can a Protected Area Help Improve Fish Populations under Heavy Recreation Fishing?
نویسندگان
چکیده
Freshwater protected areas are designated parts of the inland waters that restrict human activities. They were created as a mechanism to combat decline fauna and flora world. Some authors have questioned their actual effectiveness in terms purpose protecting endangered flora. We conducted an experiment Lipno reservoir Czech Republic evaluate impact protection against angling pressure on fish community. selected data from two years gill netting analyzed difference between low anthropogenic (LAI) those high (HAI) abundance, biomass, standard length, diversity indices. Three groups found prefer with pressure: 1. YOY (Young-of-the-year) perch (Perca fluviatilis), dominant young-of-the-year 2. Pike (Esox lucius), wels catfish (Silurus glanis) rudd (Scardinius erythrophthalmus), which not HAI at all. 3. Larger individuals pikeperch (Stizostedion lucioperca), survived better LAI areas. factors may affect LAI, such illegal poaching or setting out food bait attract outside. Another factor can be considered is migration fish, either forage reproduce, since open reservoir. The act protective habitats for heavily exploited predatory species increase indexes. example low-impact should followed other water bodies fishing impact.
منابع مشابه
Quiet, Nonconsumptive Recreation Reduces Protected Area Effectiveness
Protected areas around the world were created with the goals of preserving biodiversity and providing nature-based recreation opportunities for millions of people. This dual mandate guides the management of the majority of the world’s protected areas, but there is growing evidence that quiet, nonconsumptive recreation may not be compatible with biodiversity protection. We combined noninvasive s...
متن کاملFluctuations of fish populations and the magnifying effects of fishing.
A central and classic question in ecology is what causes populations to fluctuate in abundance. Understanding the interaction between natural drivers of fluctuating populations and human exploitation is an issue of paramount importance for conservation and natural resource management. Three main hypotheses have been proposed to explain fluctuations: (i) species interactions, such as predator-pr...
متن کاملExploring the Fishing by Stake-nets inside the Qeshm Island's Marine Protected Area
High population pressure in coastal areas has led to loss in many mangrove areas. Although these areas are fish nursery grounds, but there are no accurate and up-to-date data available. In this research, the catch data in the Qeshm Island marine protected area (MPA) were investigated using 11 stake nets. Totally, 81 specimens belong to 60 genera and 63 families caught, which majority of them we...
متن کاملSchroeder and Love.: Recreational Fishing and Marine Fish Populations
We present and review information regarding recreational angling and exploited marine fish populations in California. A comparison of rockfish assemblages among three differently fished areas (one open to all fishing, another open only to recreational fishing, and a de facto marine protected area) revealed large differences in fish density, size structure, and species composition. The area open...
متن کاملBeyond connectivity: how empirical methods can quantify population persistence to improve marine protected-area design.
Demographic connectivity is a fundamental process influencing the dynamics and persistence of spatially structured populations. Consequently, quantifying connectivity is essential for properly designing networks of protected areas so that they achieve their core ecological objective of maintaining population persistence. Recently, many empirical studies in marine systems have provided essential...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Water
سال: 2023
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w15040632