Habitat and humans predict the distribution of juvenile and adult snapper (Sparidae: Chrysophrys auratus) along Australia's most populated coastline

被引：19

作者：

Rees, M. J. ^{[1
]}

Knott, N. A. ^{[1
]}

Hing, M. L. ^{[1
]}

Hammond, M. ^{[1
]}

Williams, J. ^{[2
]}

Neilson, J. ^{[3
]}

Swadling, D. S. ^{[1
]}

Jordan, A. ^{[2
]}

机构：

[1] NSW Dept Primary Ind, Fisheries Res, POB 89, Huskisson, NSW 2540, Australia

[2] NSW Dept Primary Ind, Fisheries Res, Locked Bag 800, Nelson Bay, NSW 2315, Australia

[3] NSW Dept Primary Ind, Marine Planning, 84 Crown St, Wollongong, NSW 2520, Australia

来源：

ESTUARINE COASTAL AND SHELF SCIENCE | 2021年 / 257卷

关键词：

Baited remote underwater video (BRUV); Ecosystem-based fisheries management; Essential fish habitat; Fisheries management; Species distributions modelling; SPECIES DISTRIBUTION MODELS; REEF FISH ASSEMBLAGES; NEW-SOUTH-WALES; PAGRUS-AURATUS; NEW-ZEALAND; ABUNDANCE; PATTERNS; COMPLEXITY; CONNECTIVITY; ASSOCIATIONS;

D O I：

10.1016/j.ecss.2021.107397

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

Ecosystem-based fisheries managers are increasingly seeking quantitative and spatially-explicit information on species distributions to assist with the management of fisheries and aquatic habitats. In this study, we used boosted regression trees (BRT) to build species distribution models for a highly valued coastal teleost - pink snapper (Sparidae: Chrysophrys auratus) across rocky reefs adjacent to Australia's most urbanised coastline. BRT models for juvenile ( 25 cm total length) and adult ( 32 cm total length) snapper were created using a suite of environmental and habitat predictors. A surrogate for multiple anthropogenic stressors, measured as surrounding human population density, was also included in the models. The BRT model for juvenile snapper performed well (cross-validated AUC = 0.78) and identified habitat features as the most important drivers of their distribution across the region. Juvenile snapper were commonly associated with small patch reefs of low relief adjacent to large estuarine water bodies. In contrast, the performance of the BRT model for adult snapper was weak (crossvalidated AUC = 0.68) but identified human population density over habitat features as the strongest predictor of adult snapper distributions. Lower occurrences of adult snapper were associated with reef habitats adjacent to large metropolitan centres, suggesting anthropogenic stressors, such as water pollution, noise and fishing may be negatively impacting adult snapper in the region. Our results highlight essential habitats for snapper populations, notably the importance of large estuaries in the coastal seascape, which are nurseries for juvenile snapper. Knowledge of the demographic habitat associations and spatial distribution of snapper across this highly urbanised coastline will support ongoing management and monitoring of snapper populations and their key habitats.

引用

页数：14