Jhen Hsu

ORCID: 0000-0003-1259-8751
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About
Contact & Profiles
Research Areas
  • Marine and fisheries research
  • Marine Bivalve and Aquaculture Studies
  • Fish Ecology and Management Studies
  • Coral and Marine Ecosystems Studies
  • Isotope Analysis in Ecology
  • GABA and Rice Research
  • Research on scale insects
  • Genetic and phenotypic traits in livestock
  • Climate Change, Adaptation, Migration
  • Land Use and Ecosystem Services
  • Coastal and Marine Management
  • Soybean genetics and cultivation
  • Forest ecology and management
  • Fish Biology and Ecology Studies
  • Livestock and Poultry Management
  • Plant Genetic and Mutation Studies
  • Insect-Plant Interactions and Control

National Taiwan University
2016-2024

National Taiwan Ocean University
2016

Abstract We developed habitat suitability index ( HSI ) models for two size classes of Pacific saury Cololabis saira in the Northwestern Ocean. Environmental data, including sea surface temperature, height, salinity, and net primary production, catch effort data from Taiwanese distant‐water stick‐held dip fisheries during main fishing season (August–October) 2002–2015 were used. Habitat preferences suitable area differed between classes. The was located 40–47.5°N 145–165°E large‐sized but...

10.1111/fog.12408 article EN Fisheries Oceanography 2018-09-12

The environmental characteristics of the Taiwan Strait (TS) have been linked to variations in abundance and distribution greater amberjack (Seriola dumerili) populations. Greater is a commercially ecologically valuable species ecosystems, its spatial patterns are pivotal fisheries management conservation. However, relationship between catch rates S. dumerili changes their impact on fish communities remains undetermined TS. goal this study was determine spatiotemporal pattern with TS from...

10.3390/rs14122932 article EN cc-by Remote Sensing 2022-06-19

The Pacific bluefin tuna (Thunnus orientalis, PBF), an iconic fisheries species, is heavily exploited and its biomass at a historically low level. To enhance effectiveness of management conservation, study was initiated to examine the demographic changes PBF between 2002 2015. Annual age compositions were estimated by applying empirical age-length key, based on ages lengths 892 fish, length frequencies observed among annual catches in northwestern spawning grounds located near Taiwan. Ages...

10.1093/icesjms/fsw142 article EN ICES Journal of Marine Science 2016-08-05

South Pacific albacore ( Thunnus alalunga ) is a highly migratory tuna species widely distributed throughout 0°–50°S in the Ocean. Climate-driven changes oceanographic condition largely influence distribution, relative abundance, and consequent availability by longline fisheries. In this study, we examined habitat preference spatial distribution of south using generalized additive model fitted to fisheries data from Western Central Fisheries Commission (WCPFC) Inter-American Tropical Tuna...

10.3389/fmars.2021.731950 article EN cc-by Frontiers in Marine Science 2021-09-28

The age composition of the catch and growth curve a stock are fundamentally important in fish assessment, but these estimates subject to various sources uncertainty. Using Pacific bluefin tuna (Thunnus orientalis) fisheries waters off Taiwan as an example, we developed Monte Carlo simulation model evaluate effects four otolith sampling methods (random sampling, ROS; fixed FOS; proportional POS; reweighting REW), ageing error (bias imprecision) on estimations curves. results indicated that...

10.1071/mf18241 article EN cc-by-nc-nd Marine and Freshwater Research 2019-01-01

Abstract Determining how resilient a stock-recruitment relationship is to environmental variation crucial for fisheries management. Steepness key factor characterizing the resilience of fish stock and, hence, establishing management reference points. This study estimates distribution steepness Pacific saury using simulation approach based on evolutionary ecology and reproductive biology, it changes in response change. The median estimated 0.82 (80% probable range 0.59, 0.93) best available...

10.1093/icesjms/fsae030 article EN cc-by ICES Journal of Marine Science 2024-04-02

Abstract This study examined the spatial and monthly variations in reproductive dynamics of Pacific saury collected high sea (40°N−49°N, 149°E−168°E) northwestern during fishing season Taiwanese stick‐held dip‐net fisheries (July–November) from 2018 to 2019. Generalized additive mixed‐effects models (GAMMs) were applied explore relationship between probability maturing spawning occurrence ( P MOS ) explanatory variables (month, body length, sea‐surface temperature [SST] as fixed effects, set...

10.1111/jfb.15532 article EN Journal of Fish Biology 2023-08-22

Abstract This study employed an arithmetic mean model with sea surface temperature and chlorophyll data (2-month lag) to determine the projected impact of climate change on immature albacore tuna habitat in Indian Ocean. Albacore fishing from Taiwanese longline fishery 2000 2016 were used. Standardization nominal catch per unit effort was performed prevent bias overestimation resulting various temporal spatial factors. In Ocean, potential habitats exhibited significant suitability index...

10.21203/rs.3.rs-1615080/v1 preprint EN cc-by Research Square (Research Square) 2022-06-08
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