Evaluating and ranking the Vulnerability of the marine ecosystem to multiple threats

GREEN SEA K.; RAJAKUMAR M.; UMAMAHESWARI T.; SUJATH KUMAR N. V.; JAWAHAR P.; NARESH RAJ KEER; RAJPAL YADAV; AJAY Kumar yadav

doi:10.56093/ijans.v92i5.113397

Authors

GREEN SEA K. Department of Fisheries Extension, Economics and Statistics, Fisheries College and Research Institute, Thoothukudi-628008
RAJAKUMAR M. Director of Extension Education, Tamil Nadu Dr.J.Jayalalithaa Fisheries University, Nagapattinam-611002
UMAMAHESWARI T. Department of Fisheries Extension, Economics and Statistics, Fisheries College and Research Institute, Thoothukudi-628008
SUJATH KUMAR N. V. Department of Fisheries Extension, Economics and Statistics, Fisheries College and Research Institute, Thoothukudi-628008
JAWAHAR P. Controller of Examination, Tamil Nadu Dr.J.Jayalalithaa Fisheries University, Nagapattinam-611002.
NARESH RAJ KEER ICAR-Central Institute of Fisheries Education, Mumbai, India-400061
RAJPAL YADAV ICAR-Central Institute of Fisheries Education, Mumbai, India-400061
AJAY Kumar yadav ICAR-Indian Agriculture Research Institute, New Delhi, India

https://doi.org/10.56093/ijans.v92i5.113397

Keywords:

Climatic, Anthropogenic, Fishing stressors, Marine ecosystem, GOMBRT

Abstract

Marine ecosystem is threatened by a suite of climatic, anthropogenic, agricultural and aquacultural and fishing stressors. Agriculture and anthropogenic activity are the major drivers of biodiversity loss by extensive use of pesticides and fertilizers, and encounter depleted soils and erosion due to unsustainable farming practices. This study provides an assessment of the various potential threats that vulnerability of marine biodiversity in the Gulf of Mannar. In order to collect the data, a questionnaire was distributed to more than 100 resource users from four districts of GOMBRT in binary format. The data was then explored using multivariate logit regression method followed by Hosmer-Lemeshow test. The evaluation showed that all the determinants of various threats significantly affect the vulnerability of marine ecosystem. Among the studied factors, change in sea temperature, increase in fishing efforts, advanced farming practices, occurrence of endangered species, and tourism were greatest threats (high log odds ratio), identified as most important determinants affecting marine ecosystem.Marine ecosystem is threatened by a suite of climatic, anthropogenic, agricultural and aquacultural and fishing stressors. Agriculture and anthropogenic activity are the major drivers of biodiversity loss by extensive use of pesticides and fertilizers, and encounter depleted soils and erosion due to unsustainable farming practices. This study provides an assessment of the various potential threats that vulnerability of marine biodiversity in the Gulf of Mannar. In order to collect the data, a questionnaire was distributed to more than 100 resource users from four districts of GOMBRT in binary format. The data was then explored using multivariate logit regression method followed by Hosmer-Lemeshow test. The evaluation showed that all the determinants of various threats significantly affect the vulnerability of marine ecosystem. Among the studied factors, change in sea temperature, increase in fishing efforts, advanced farming practices, occurrence of endangered species, and tourism were greatest threats (high log odds ratio), identified as most important determinants affecting marine ecosystem.

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Author Biographies

GREEN SEA K., Department of Fisheries Extension, Economics and Statistics, Fisheries College and Research Institute, Thoothukudi-628008

Department of Fisheries Extension, Economics and Statistics
RAJAKUMAR M., Director of Extension Education, Tamil Nadu Dr.J.Jayalalithaa Fisheries University, Nagapattinam-611002

Director of Extension Education
UMAMAHESWARI T., Department of Fisheries Extension, Economics and Statistics, Fisheries College and Research Institute, Thoothukudi-628008

Department of Fisheries Extension, Economics and Statistics
SUJATH KUMAR N. V., Department of Fisheries Extension, Economics and Statistics, Fisheries College and Research Institute, Thoothukudi-628008

Department of Fisheries Extension, Economics and Statistics
JAWAHAR P., Controller of Examination, Tamil Nadu Dr.J.Jayalalithaa Fisheries University, Nagapattinam-611002.

Controller of Examination
NARESH RAJ KEER, ICAR-Central Institute of Fisheries Education, Mumbai, India-400061

Department of Aquaculture
RAJPAL YADAV, ICAR-Central Institute of Fisheries Education, Mumbai, India-400061

Department of Fisheries Economics, Extention and Satistics

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