A5008656177- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine Bivalve and Aquaculture Studies
- Coral and Marine Ecosystems Studies
- Marine and coastal plant biology
- Crustacean biology and ecology
- Isotope Analysis in Ecology
- Cephalopods and Marine Biology
- Health and Lifestyle Studies
- Cuban History and Society
- Spanish Literature and Culture Studies
- Libraries, Manuscripts, and Books
- Fish Biology and Ecology Studies
- Evolutionary Game Theory and Cooperation
- Reproductive biology and impacts on aquatic species
- Literacy and Educational Practices
- Marine animal studies overview
- Ichthyology and Marine Biology
- Fish biology, ecology, and behavior
- Aquaculture Nutrition and Growth
- Avian ecology and behavior
Center of Applied Ecology & Sustainability
2015-2023
Pontificia Universidad Católica de Chile
2015-2023
Valparaiso University
2014
Instituto de Fomento Pesquero
2009-2014
University of York
2011
Abstract Management strategy evaluation (MSE) is the state‐of‐the‐art approach for testing and comparing management strategies in a way that accounts multiple sources of uncertainty (e.g. monitoring, estimation, implementation). can help identify are robust to about life history target species its relationship other food web. Small pelagic fish anchovy, herring sardine) fulfil an important ecological role marine webs present challenges use MSE simulation‐based approaches. This due...
There remains a lack of holistic approaches for analyzing how different density-independent and density-dependent (endogenous) mechanisms interact to drive the dynamics small pelagic fish populations southern Humboldt Current ecosystem. In this study, we analyzed drivers fishes off coast Chile from late 1980s until early 2010s. We postulated that climate, fishing endogenous effects drove biomass these populations. Per capita growth rates (R-models) were used investigate factors regulated...
Abstract Small pelagic fish lack clear stock–recruitment relationships. This is a problem because such relationships are taken to be the primary descriptors of density dependence, responsible for regulating population density. In this paper, we show that small species, anchovy ( Engraulis spp., Engraulidae), living in stochastic environment, can strongly regulated without relationship emerging. done through numerical analysis size‐spectrum model, which grow by eating and die part from being...
Fluctuations in the abundance of anchovy (Engraulis spp.) and sardine (Sardinops sagax) are widespread marine ecosystems, but causes still remain uncertain. Differences between planktonic prey availability, selectivity, predation have been suggested as factors influencing their dynamics. Using a dynamical multispecies size-spectrum model, we explore consequences changes plankton size composition, together with intraguild cannibalism, on coexistence these species. The shift towards smaller...
The collapse of marine fisheries had caused a cascade dramatic ecological, social and economic consequences. Recognizing the complex nature collapses, two basic minimum elements should be included in fishery models. First, dynamics fish population second changes fishing effort that are co-determined by harvest forces. rapid abrupt shifts abundance exhibited some populations can driven fleet behaving like generalist predators. Here we develop dynamic model with negative feedback stock sigmoid...
In the central north of Chile (25°00'S-32°10'S) an anchoveta fishery (Engraulis ringens) operates on a small scale.In spite being controlled by total allowed catches, life history parameters used to estimate its abundance remain unknown.We estimated basic biological as growth, maturity and natural mortality for anchovy inhabiting Chilean north.The von Bertalanffy were annual growth rate (k) 0.91 year -1 , asymptotic length (L ∞ ) at 18.72 cm, age zero (t o -0.01 year.The maximum value...
The Patagonian sprat, Sprattus fuegensis, has been recently identified in the catches of small pelagic fish inland waters Chiloé, southern Chile.In spite its increasing economic importance, there are still unknown aspects reproductive biology.This study describes activity females this species based on monthly variation Gonadosomatic Index (IGS) and frequency macroscopic states maturity between January 2006 December 2009 microscopic since February 2007.The at length was studied during main...
The southern rays bream (Brama australis) is a highly migratory, epi-mesopelagic species supporting an important artisanal fishery off central-southern Chile. Despite its importance, several questions exist about this species's demography and migratory routes. first step in understanding the behavior of B. australis to test feasibility conventional tagging program, standard mark-recapture method, infer migration fish. Between February 2020 December 2021, was conducted during 21 fishing trips...
Abstract Natural mortality ( M ) is a key parameter for understanding population dynamics, especially in relation to harvested populations. Direct observations of crustaceans are scarce, due the moulting process. Indirect methods estimate with easier-to-obtain life history attributes therefore used routinely. Given their theoretical background, we reviewed applicability these crustaceans. We applied selected two crustacean species Chilean waters: yellow squat lobster Cervimunida johni and...
Data about Brama australis distribution along the Chilean coast and South Pacific is scarce varied.The aim of this study was to provide new information concerning spatial bathymetric occurrence B. in Southern Ocean.To do this, all data available scientific literature regarding Chile Ocean were collected, including fishery dependent independent as well bycatch data.B. could be present a wider latitudinal range from 27°S 57°S, fjords, open ocean, band Ocean, New Zealand up coast.Thus, B shows...
The definition of catch intention in multispecies fisheries is a key step toward building abundance indexes based on commercial fishing data. Previous analysis to determine the pink cusk-eel (Genypterus blacodes) has been idea that tactics remain constant over time (static tactics). We propose statistical procedure each haul industrial longline southern Chile, where may vary time. This principal component and agglomerative hierarchical composition, relaxes assumption static by selecting...
Fitting length data in age-structured stock assessment is a common method for evaluating hard-to-age animals, such as crustaceans. Growth specification and the uncertainty recruitment relationship are key issues length-based models. We conducted sensitivity analyses to evaluate impact of growth parameters on management variables yellow squat lobster (Cervimunida johni) caught off Chilean coast. Nine different scenarios at first capture ( L = 1 ) coefficient variation age c v were tested six...
Abstract Coastal rocky fish species support important fishing activities, but basic information is lacking for many before catches decline. Monitoring and management of coastal urgently needed in Chile, knowledge these fragmentary at best. Performance Baited Remote Underwater Video Stations (BRUVS) assessing assemblages was evaluated south‐central Chile. Seven medium‐ to large‐sized exploited dominated the survey area, including five small cryptic reef fishes, one agnathan a catshark...
Data about Brama australis distribution along the Chilean coast and South Pacific is scarce varied. The aim of this study was to provide new information concerning spatial bathymetric occurrence B. in Southern Ocean. To do this, all data available scientific literature regarding Chile Ocean were collected, including fishery dependent independent as well bycatch data. could be present a wider latitudinal range from 27°S 57°S, fjords, open ocean, band Ocean, New Zealand up coast. Thus, B shows...
No abstract available.ECA Estudios Centroamericanos, Vol. 31, No. 332-333, 1976: 289-298.