Partially Protected Areas (PPAs) are a widely-used management tool, yet comparatively little is known about their effectiveness compared to more commonly studied No-Take Marine Reserves (NTMRs). Here, we examine the efficacy of two kinds of PPAs (with and without spearfishing) within the Great Barrier Reef Marine Park (GBRMP) that are subject to a range of fishing limitations, and assess their utility as a marine park zoning and fisheries management tool. Fish abundance, size, and habitat composition were compared inside PPAs and NTMRs on inshore reefs of the central GBR. Fish abundances were lower inside PPAs relative to adjacent NTMRs for primary fishing targets, with no detectable effects for secondary targets and non-targets, or for species richness. Fish assemblages differed amongst zones, but these variations were minor compared to regional variations in species composition. Partially Protected Areas supported 46%–69% of the relative abundance of total primary targets compared to adjacent NTMRs, with no evident increase in abundance in zones where spearfishing was prohibited. There were no reductions in the size of two key target species: coral trout (Plectropomus spp.) and stripey snapper (Lutjanus carponotatus) inside PPAs, and only stripey snapper had significant reductions in abundance inside PPAs compared to NTMRS. Habitat and biophysical characteristics (especially topographic complexity) were strong drivers of fish abundance, but the relative influence of zone was greater for target species compared to non-targets. This study provides novel data on PPAs and highlights their utility as a spatial management tool in contributing to conservation and fisheries management goals.

部分保护区（PPA）是一种广泛使用的管理工具，但与更常研究的禁捕型海洋保护区（NTMRs）相比，其有效性知之甚少。在这里，我们研究了大堡礁海洋公园（GBRMP）内两种受PPA限制的PPA（有无鱼捞和无鱼捞）的功效，并评估了它们作为海洋公园分区和渔业管理工具的效用。比较了GBR中部近岸珊瑚礁上的PPA和NTMR内部的鱼类丰度，大小和栖息地组成。与主要目标捕捞目标的相邻NTMR相比，PPA内的鱼类丰度较低，对次要目标和非目标或物种丰富度没有可检测到的影响。不同区域的鱼类组合不同，但是与物种组成的区域差异相比，这些差异较小。与邻近的NTMR相比，部分保护区支持的总主要目标的相对丰度为46％–69％，在禁止长矛捕捞的地区，丰度没有明显增加。两种主要目标物种的大小没有减少：珊瑚鳟鱼（PNT内的Plectropomus spp。）和Stripey鲷鱼（Lutjanus carponotatus），与NTMRS相比，只有Stripey鲷鱼PPA内的丰度显着降低。栖息地和生物物理特征（尤其是地形复杂性）是鱼类丰度的重要驱动因素，但与非目标物种相比，目标物种对区域的相对影响更大。这项研究提供了有关PPA的新颖数据，并强调了它们在促进保护和渔业管理目标方面作为空间管理工具的效用。