Discarded or lost fishing gear from recreational or commercial fishers significantly contributes to global marine pollution. This debris accumulates with organic detritus on the seafloor, potentially impacting detrital dynamics. We used an outdoor mesocosm experiment to test hypotheses that soft plastic lures with nylon lines and commercial-grade fish netting influence the decomposition of Ecklonia radiata detritus in current and future ocean temperatures. Commercial-grade fish netting had no significant impact on the decomposition of E. radiata detritus but did increase the change in nitrogen content of detritus over time. Soft plastic fishing lures significantly decreased the decomposition of E. radiata detritus by 14.4 % and decreased its C/N ratio over time. At 26 °C, detritus decomposition and its C/N ratio significantly increased but did not affect carbon or nitrogen. We highlight that the type of fishing gear can determine the effect on detrital decomposition and the associated detrital dynamics.

中文翻译：

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软塑料鱼饵和渔网对辐射埃克洛尼亚的分解有显著影响


休闲或商业渔民丢弃或丢失的渔具是造成全球海洋污染的重大原因。这些碎屑与有机碎屑一起堆积在海底，可能会影响碎屑动力学。我们使用户外中宇宙实验来检验以下假设：带有尼龙线和商业级鱼网的软塑料诱饵会影响当前和未来海洋温度下 Ecklonia radiata 碎屑的分解。商业级渔网对辐射桉碎屑的分解没有显著影响，但随着时间的推移确实增加了碎屑中氮含量的变化。随着时间的推移，软塑料鱼饵显著降低了 14.4 % 的辐射桉碎屑分解，并降低了其 C/N 比。26 °C 时，碎屑分解及其 C/N 比显著增加，但对碳或氮没有影响。我们强调，渔具的类型可以决定对碎屑分解和相关的碎屑动力学的影响。