Ocean & Coastal Management最新文献_第5页

Bio-geomorphologic effects on blue carbon accumulation in mangrove sediments 生物地貌对红树林沉积物蓝碳积累的影响

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-15 DOI: 10.1016/j.ocecoaman.2025.108054

Qin Zhu , Chao Yang , Ding He , Haifei Yang , Weilun Gao , Zhihao Xu , Zhenchang Zhu

Blue carbon habitats, such as mangroves, salt marshes and seagrasses, are vital carbon sinks, storing large amounts of organic carbon in sediments, which often exhibit pronounced spatial variability even within a single site. Here, we examined the bio-geomorphologic controls underlying this spatial heterogeneity through year-round field investigation in a mangrove ecosystem along China's southern coast. Field observations across an elevation gradient revealed that sediment organic carbon stocks generally decreased with lowering elevation, with vegetated zones storing significantly more organic carbon than adjacent bare mudflats. Further analysis demonstrated that wave-induced bed level variability—rather than sediment input alone—was the primary factor governing carbon storage in the sediment. Vegetated zones had much higher sediment organic carbon stocks than bare mudflats due to the reduced hydrodynamic disturbance provided by the vegetation. Despite receiving six times more sediment input, the sediment carbon stock in the top 15 cm of bare mudflats was less than 25 % of that in the vegetated zones, due to experiencing at least three times more erosion and carbon loss. These findings establish a bio-geomorphologic framework for understanding heterogeneous carbon sequestration within mangroves and extend to other vegetated blue carbon habitats. By providing empirical evidence for the regulating role of bio-geomorphologic feedbacks, this study enhances predictive understanding of organic carbon burial processes and informs long-term assessments of coastal carbon sink dynamics under changing environmental conditions.

蓝碳栖息地，如红树林、盐沼和海草，是至关重要的碳汇，在沉积物中储存了大量有机碳，即使在单一地点，沉积物也往往表现出明显的空间变异性。在这里，我们通过对中国南部沿海红树林生态系统的全年实地调查，研究了这种空间异质性背后的生物地貌控制因素。不同海拔梯度的野外观测表明，沉积物有机碳储量总体上随着海拔的降低而减少，植被带的有机碳储量明显高于邻近的裸泥滩。进一步的分析表明，波浪引起的河床变化——而不仅仅是泥沙输入——是控制沉积物中碳储量的主要因素。植被带沉积物有机碳储量远高于裸滩，这是由于植被提供的水动力干扰减少所致。尽管接受了6倍以上的泥沙输入，但由于经历了至少3倍以上的侵蚀和碳损失，裸泥滩顶部15厘米的沉积物碳储量不到植被带的25%。这些发现为理解红树林内的非均匀碳固存建立了一个生物地貌学框架，并扩展到其他植被蓝碳栖息地。本研究为生物地貌反馈的调节作用提供了经验证据，增强了对有机碳埋藏过程的预测性认识，并为变化环境条件下沿海碳汇动态的长期评估提供了依据。

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引用次数: 0

The extent and severity of seal-interactions with fisheries in the United Kingdom 英国海豹与渔业相互作用的程度和严重程度

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-15 DOI: 10.1016/j.ocecoaman.2025.108036

Claire E. Tanner , Katrina J. Davis

Seal-fishery interactions are a growing form of human–wildlife conflict, often involving depredation, where seals remove or damage catch during fishing operations. These interactions can impose economic costs on fisheries and increase the risk of bycatch and entanglement for seals. We quantified the extent and severity of seal depredation in UK inshore fisheries using fisher and seal surveys and estimates of partially eaten catch. On average, seals depredated 25.5 % (±38.1 % SD) of the catch per fishing event. Depredation rates varied markedly by gear type, target species, and location. Nets and handlines targeting pelagic and demersal fish experienced the highest losses, particularly when large numbers of seals were observed near vessels. In contrast, traps and shellfish fisheries showed minimal depredation. Our findings suggest that proximity to the seal haul-outs, high-value target species, and passive gear types increase vulnerability to seal interactions. By identifying the ecological and operational factors that shape depredation risk, managers can better design targeted, non-lethal strategies to reduce conflict and support coexistence between fisheries and protected pinnipeds (e.g., seals, sea lions, and walruses).

海豹与渔业的互动日益成为人类与野生动物冲突的一种形式，通常涉及捕食，海豹在捕鱼作业中拿走或破坏捕获物。这些相互作用会给渔业带来经济成本，并增加海豹被副渔获物和缠结的风险。我们通过对渔民和海豹的调查以及对部分被吃掉的渔获物的估计，量化了英国近海渔业中海豹被捕食的程度和严重程度。平均而言，海豹在每次捕捞事件中会减少25.5%（±38.1% SD）的渔获量。掠食率因渔具类型、目标物种和地点的不同而有显著差异。针对远洋和底栖鱼类的渔网和绳损失最大，特别是在船只附近观察到大量海豹时。相比之下，陷阱和贝类渔业显示出最小的掠夺。我们的研究结果表明，靠近海豹拖出区、高价值目标物种和被动齿轮类型会增加对海豹相互作用的脆弱性。通过识别影响捕食风险的生态和操作因素，管理者可以更好地设计有针对性的、非致命性的策略，以减少冲突，支持渔业与受保护的鳍足类动物（如海豹、海狮和海象）之间的共存。

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引用次数: 0

Capturing multi-stakeholders' perspectives on mangrove blue carbon project and alternative livelihoods in coastal Tanzania 获取多方利益相关者对坦桑尼亚沿海地区红树林蓝碳项目和替代生计的看法

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-15 DOI: 10.1016/j.ocecoaman.2025.108048

Baraka P. Nyangoko , Jerry Mang'ena

Blue Carbon Projects (BCPs) are emerging as critical nature-based solutions that play an important role in climate change mitigation through the protection and restoration of Blue Carbon Ecosystems like mangroves. However, the outcomes of BCPs on traditional rights holders, especially in developing countries are often debated. This study explored stakeholders' perspectives on the feasibility of establishing BCP as a conservation financing tool and an alternative livelihood strategy in mangrove-dependent coastal communities in Tanzania (Rufiji Delta, Kigamboni, Kinondoni and Bagamoyo Districts). Data were collected through participatory rural appraisal methods, household questionnaire surveys, and field observations. The results revealed that over 76 % of respondents were strongly willing to engage in mangrove conservation through BCP, particularly in the Rufiji Delta and Kigamboni. Across all sites, respondents commonly felt that preserving mangrove ecosystems through BCP offers broader co-benefits beyond natural climate solutions. Mangrove provisioning services were most recognized by the communities, followed by regulating, cultural, and supporting services. Government representatives and local fishermen were identified as key stakeholders to be involved in the BCP. Prior to the initiation of BCP, five major risks that could jeopardize BCP execution were identified, which included limited knowledge and expertise regarding carbon credits, uncertainty about project timelines, inadequate monitoring, unclear guidelines for benefit-sharing mechanisms, and disputes over resource ownership and access rights. Some of the co-designed alternative livelihood scenarios were perceived to have both beneficial and detrimental impacts on mangroves in the future. Fish farming within mangroves was seen as a threat to ecosystem services, whereas beekeeping was viewed positively for its socio-ecological merits. To ensure that the benefits of the BCP outweigh the associated risks, our findings call for strong collaboration among stakeholders, clear policy guidelines, and recognizing local resource users as custodians of conservation rather than culprits of degradation. Overall, a deeper understanding of community willingness to participate in BCPs is important for informing future project designs and policy reforms tailored to specific contexts, and can strengthen the link between resource users and blue carbon investors.

蓝碳项目（bcp）正在成为关键的基于自然的解决方案，通过保护和恢复红树林等蓝碳生态系统，在减缓气候变化方面发挥重要作用。然而，bcp对传统权利持有人的影响，特别是在发展中国家，经常引起争论。本研究探讨了利益相关者对在坦桑尼亚依赖红树林的沿海社区（Rufiji三角洲、Kigamboni、Kinondoni和Bagamoyo地区）建立BCP作为保护融资工具和替代生计战略的可行性的看法。通过参与式农村评价方法、家庭问卷调查和实地观察收集数据。结果显示，超过76%的受访者强烈希望通过BCP参与红树林保护，特别是在鲁菲奇三角洲和基甘博尼。在所有地点，受访者普遍认为通过BCP保护红树林生态系统提供了比自然气候解决方案更广泛的共同利益。红树林供应服务最受社区认可，其次是调节服务、文化服务和支持服务。政府代表和当地渔民被确定为参与生物保护计划的主要利益相关者。在启动BCP之前，确定了可能危及BCP执行的五大风险，包括有关碳信用额度的知识和专业知识有限，项目时间表的不确定性，监测不足，利益分享机制的指导方针不明确，以及资源所有权和使用权的争议。一些共同设计的替代生计方案被认为对未来的红树林既有有益的影响，也有有害的影响。在红树林内养鱼被视为对生态系统服务的威胁，而养蜂则因其社会生态价值而被积极看待。为了确保BCP的益处大于相关风险，我们的研究结果要求利益相关者之间进行强有力的合作，制定明确的政策指导方针，并认识到当地资源使用者是保护的保管人，而不是退化的罪魁祸首。总体而言，更深入地了解社区参与bcp的意愿对于为未来的项目设计和针对具体情况的政策改革提供信息非常重要，并且可以加强资源使用者和蓝碳投资者之间的联系。

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引用次数: 0

Assessing an expert education program in support of non-regulatory marine fisheries management 评估支持非管制海洋渔业管理的专家教育计划

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-14 DOI: 10.1016/j.ocecoaman.2025.108046

William R. Casola , Savanna Barry , Kotryna Klizentyte , Chelsey Crandall , Michael Sipos , Edward Camp

Educational campaigns are a commonly used tool to alter public behaviors; however, such approaches may be less suitable when the behaviors targeted are activity specific, like recreational fishing. One alternative to large campaigns is targeted education of experts who may function as opinion leaders. We tested the impact of educational programs targeted at marine recreational fishing guides in Florida, USA. We evaluated how course participation impacted confidence and knowledge (self-reported and objective) using pre- and post-course assessments. Additionally, we evaluated the extent to which program participants differed from non-participants using a survey that measured self-reported confidence and knowledge, perceptions of their influence on management and their influence on clients, and environmental attitudes as measured with the New Ecological Paradigm (NEP) scale. Pre-post comparison showed program participation increased at least short-term self-reported confidence, and self-reported and objective knowledge. Additionally, guides who completed the program had higher perceived influence on management compared to those who did not participate. In concert, these results suggest that education programs may positively alter expert knowledge, confidence and, potentially, willingness to engage in management or participatory approaches, though the design of this study limits causal inferences. These results are compatible with the conceptual model of expert education programs supporting non-regulatory governance of specific activities, like marine recreational fishing.

教育活动是改变公众行为的常用工具；然而，当针对的行为是特定活动时，比如休闲钓鱼，这种方法可能就不太合适了。一个替代大规模运动的办法是有针对性地教育专家，让他们发挥意见领袖的作用。我们测试了针对美国佛罗里达州海洋休闲钓鱼向导的教育项目的影响。我们使用课程前和课程后的评估来评估课程参与如何影响信心和知识（自我报告和客观）。此外，我们使用一项调查来评估项目参与者与非参与者的差异程度，该调查测量了自我报告的信心和知识，他们对管理和客户影响的看法，以及用新生态范式（NEP）量表测量的环境态度。前后比较表明，参与项目至少增加了短期自我报告的信心，以及自我报告和客观知识。此外，完成课程的导游比没有参加的导游对管理有更高的感知影响力。尽管本研究的设计限制了因果推论，但这些结果表明，教育计划可能会积极地改变专业知识、信心，并潜在地改变参与管理或参与式方法的意愿。这些结果与专家教育计划的概念模型相一致，该计划支持对特定活动（如海洋休闲钓鱼）进行非监管性治理。

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引用次数: 0

A bibliometric analysis of global seagrass blue carbon research: Informing coastal management and policy for climate change mitigation 全球海草蓝碳研究的文献计量学分析：为沿海管理和减缓气候变化政策提供信息

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-14 DOI: 10.1016/j.ocecoaman.2025.108056

Ming Wang , Jingjing Sha

引用次数: 0

Chasing bugs: characterizing the spatiotemporal patterns of recreational lobster fishing in the Florida Keys 追逐虫子：佛罗里达群岛休闲龙虾捕捞的时空模式特征

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-13 DOI: 10.1016/j.ocecoaman.2025.108057

Gabrielle F. Renchen, Casey B. Butler, Emily Hutchinson, Thomas R. Matthews

The Florida Keys support one of the world's most intense recreational lobster fisheries and is centered on the Caribbean spiny lobster (Panulirus argus). Each year, a highly popular 2-day sport season precedes the regular lobster season. To quantify and characterize the spatiotemporal patterns of boating activity across the Florida Keys, we conducted aerial surveys in the 1990s and 2010s across a grid system of ∼1 nm² cells, comparing lobster season openers (sport season and regular season opener) with non-lobster days. Boating activity peaked during lobster sport season, with most boats engaged in diving to target lobsters. During lobster season openers, dive boats were widely dispersed and occupied roughly twice as many grids as on non-lobster days and shifted from the oceanside (dominant during the closed season) to the Gulfside of the Florida Keys. Persistent hot spots of diving activity were identified across decades: on the Gulfside during lobster season openers and on the oceanside near or within Florida Keys National Marine Sanctuary Preservation Areas during non-lobster days. These consistent, localized concentrations of fishing pressure across decades underscore the importance of incorporating spatiotemporal patterns of fishing pressure into fisheries management. Evaluating the effects of such fishing pressure is critical for sustaining lobster stocks, improving boating safety, and safeguarding the sensitive wildlife, habitats, and ecosystems of the Florida Keys.

佛罗里达群岛支持世界上最密集的休闲龙虾渔业之一，以加勒比刺龙虾（Panulirus argus）为中心。每年，一个非常受欢迎的为期两天的运动季节在常规的龙虾季节之前。为了量化和表征佛罗里达群岛划船活动的时空模式，我们在20世纪90年代和2010年代对一个约1 nm2单元格的网格系统进行了空中调查，比较了龙虾季开幕日（运动季和常规赛季开幕日）和非龙虾日。在龙虾运动季节，划船活动达到高峰，大多数船只都在潜水捕捉龙虾。在龙虾季开放期间，潜水船广泛分布，占据的网格大约是无龙虾日的两倍，并从海边（在关闭季节占主导地位）转移到佛罗里达群岛的湾边。在过去的几十年里，人们发现了持续的潜水活动热点：在龙虾季节开放期间，在湾边；在没有龙虾的日子里，在佛罗里达群岛国家海洋保护区附近或内部的海边。这些持续数十年的局部捕捞压力集中强调了将捕捞压力的时空格局纳入渔业管理的重要性。评估这种捕捞压力的影响对于维持龙虾种群、提高划船安全以及保护佛罗里达群岛敏感的野生动物、栖息地和生态系统至关重要。

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引用次数: 0

A high-resolution spatial prioritization approach to improve the conservation strategies in a marine protected area in the Mexican Caribbean 以高分辨率空间优先排序方法改善墨西哥加勒比海海洋保护区的保护策略

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-12 DOI: 10.1016/j.ocecoaman.2025.108055

Daniela Rojas-Cano , Rodolfo Rioja-Nieto , Erick Barrera-Falcón , María del Carmen García-Rivas

Marine protected areas (MPAs) are considered the main tool for the conservation of coastal and marine ecosystems. Their effectiveness can be improved using spatially explicit approaches that integrate ecological information into management frameworks. In this study, we combined high-resolution benthic habitat mapping and seascape ecology metrics to identify priority areas for conservation in the Puerto Morelos Reef National Park (PNAPM). Quantitative analysis of benthic substrates allowed the classification of five habitat types: seagrass dominated, medium coverage of seagrass and sand, sand dominated, medium coverage to algal dominated over calcareous matrix, and reef crest. A thematic map was constructed using a supervised classification of a PlanetScope satellite image (overall accuracy = 85.1 and Kappa coefficient = 0.8), from which habitat patch complexity, patch-level connectivity, and β-diversity were calculated. These spatial layers were integrated using a weighted overlay analysis and an iterative process with all possible weight combinations to obtain an optimal map of the priority conservation areas. Habitats with high seagrass coverage dominated the PNAPM seascape, and eight high-priority zones were identified, mainly along the reef crest and northern reef lagoon, where management activities should be focused. The results of our analysis support the conservation objectives of the protected area and serve as a basis for updating the outdated management program. The integrative and reproducible approach used here offers a transparent, data-driven alternative to guide zoning processes within MPAs in shallow regions where coral reef systems are commonly distributed and supports the broader implementation of marine spatial planning strategies in the region.

海洋保护区（MPAs）被认为是保护沿海和海洋生态系统的主要工具。利用将生态信息纳入管理框架的空间明确方法可以提高其有效性。在这项研究中，我们结合高分辨率底栖生物栖息地测绘和海景生态指标来确定莫雷洛斯州礁国家公园（PNAPM）的优先保护区域。通过对底栖生物基质的定量分析，将其划分为5种生境类型：海草为主、海草+沙中覆盖、沙中覆盖、钙质基质中覆盖藻类为主和礁顶。利用PlanetScope卫星图像的监督分类（总体精度为85.1，Kappa系数为0.8）构建了专题地图，并计算了生境斑块复杂性、斑块级连通性和β多样性。使用加权叠加分析和所有可能的权重组合的迭代过程将这些空间层整合在一起，以获得优先保护区的最佳地图。海草盖度高的生境占主导地位，并确定了8个高优先区，主要沿礁顶和礁湖北部，应重点开展管理活动。我们的分析结果支持了保护区的保护目标，并为更新过时的管理程序提供了基础。这里使用的综合和可复制的方法提供了一个透明的、数据驱动的替代方案，以指导珊瑚礁系统普遍分布的浅水地区海洋保护区的分区过程，并支持在该地区更广泛地实施海洋空间规划战略。

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引用次数: 0

The relationship of microplastic pollution between seawater and oyster: A holistic perspective for bioindicator selection 海水与牡蛎微塑料污染的关系：生物指示剂选择的整体视角

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-11 DOI: 10.1016/j.ocecoaman.2025.108052

Hui Liang , Shude Liu , Shimeng Sun , Liyou Zhang , Mengjie Yu , Yanli Tang

Microplastic pollution in marine environments has emerged as a global concern due to its profound threats to ecosystems and human health. Bivalves are widely proposed as bioindicator species for microplastic monitoring; however, the rationale behind their selection remains poorly clarified. In particular, the relationship between the accumulation characteristics of microplastics in biota, their corresponding ecological risks, and the environmental profiles of microplastics is unclear, which directly affects the effectiveness and robustness of bioindicator-based monitoring strategies. Therefore, this study took oyster as a representative case and conducted seasonal sampling to systematically evaluate the relationships between microplastic concentrations, microplastic community characteristics, and multidimensional ecological risks in oyster and surrounding seawater. The results showed no significant correlation between microplastic concentrations in seawater and oysters. Microplastic community analysis revealed significant differences between seawater and oysters. White, particle size of 3500–4000 μm and 4500–5000 μm were discriminant characteristics of microplastic community in seawater, while polyethylene, black and cellulose characterized that in oysters. Higher integrated microplastic diversity was observed in oysters than seawater, with no significant correlation between them. Furthermore, based on the multidimensional ecological risk framework newly established in this study, the ecological risks of microplastic pollution in seawater and oysters exhibited different patterns, and there was no significant correlation between risk scores. Overall, these findings offer a comprehensive understanding of the relationship between microplastic pollution in seawater and oysters, thereby providing valuable guidance for the selection and evaluation of bioindicator species, and facilitating more effective environmental monitoring and management of microplastic pollution.

海洋环境中的微塑料污染已成为全球关注的问题，因为它对生态系统和人类健康构成严重威胁。双壳类被广泛建议作为微塑料监测的生物指示物种；然而，选择它们背后的理由仍然不太清楚。特别是，微塑料在生物群中的积累特征及其相应的生态风险与微塑料的环境特征之间的关系尚不清楚，这直接影响了基于生物指标的监测策略的有效性和稳健性。因此，本研究以牡蛎为代表案例，通过季节性采样，系统评价牡蛎及周围海水中微塑料浓度、微塑料群落特征与多维生态风险之间的关系。结果显示，海水中微塑料浓度与牡蛎之间没有显著相关性。微塑料群落分析显示海水和牡蛎之间存在显著差异。海水中微塑料群落的特征为白色，粒径为3500 ~ 4000 μm和4500 ~ 5000 μm，牡蛎中微塑料群落的特征为聚乙烯、黑色和纤维素。牡蛎整体微塑料多样性高于海水，但两者之间无显著相关。此外，基于本研究新建立的多维生态风险框架，海水和牡蛎中微塑料污染的生态风险表现出不同的模式，风险评分之间没有显著的相关性。综上所述，本研究结果有助于全面了解海水中微塑料污染与牡蛎之间的关系，从而为生物指示物种的选择和评价提供有价值的指导，有助于更有效地对微塑料污染进行环境监测和管理。

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引用次数: 0

Marine mammal diversity and spatio-temporal dynamics in a hyper-urbanised tropical environment 热带超城市化环境下海洋哺乳动物多样性与时空动态

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-08 DOI: 10.1016/j.ocecoaman.2025.108023

Sirius Z.H. Ng , Marcus A.H. Chua , Kelvin K.P. Lim , Danwei Huang , Zeehan Jaafar

The mesoscale distribution of marine mammals remains obscure within Southeast Asia, where coastal spaces are subject to long-term, extensive, and ongoing anthropogenic encroachment. Consequently, many populations here face high extinction risks, especially where conservation management strategies are absent or misaligned. To address this issue, we conservatively curated marine mammal records along Singapore's hyper-urbanised waters from scientific and grey literature, natural history museum archives, and citizen science datasets. We present 124 validated, time-stamped, and georeferenced records of seven species from 1820 to 2024—a majority of which (87.9 %; n = 109) were Sousa chinensis, Dugong dugon, and Tursiops aduncus occurrences (in order of frequency). This dataset, which serves as the longest record of marine mammals in Singapore to date, was used to identify occurrence hotspots and evaluate their spatio-temporal dynamics using historical maps and remotely sensed data. Dugong dugon occurrences in Singapore were most commonly observed as single individual strandings along the Sungei Johor Estuary, where two international shipping channels meet. Along with declining reported pod sizes—most evidently over the past three decades—overlapping occurrence hotspots of Sousa chinensis and Tursiops aduncus were observed within the Southern Islands. Over the assessed period, Sousa chinensis occurred in areas more associated to anthropogenic activity, which are also farther from coastal habitats. Our results add to the growing body of knowledge on the continued use of anthropogenically impacted spaces by marine mammals and are utilised to provide key recommendations for conservation and research in Singapore. The findings also applicable for areas facing similar levels of anthropogenic stress, where small and elusive marine mammal populations persist.

海洋哺乳动物在东南亚的中尺度分布仍然模糊不清，那里的沿海空间受到长期、广泛和持续的人为侵占。因此，这里的许多种群面临着高度灭绝的风险，特别是在保护管理策略缺失或错位的地方。为了解决这个问题，我们从科学和灰色文献、自然历史博物馆档案和公民科学数据集中，保守地整理了新加坡超城市化水域的海洋哺乳动物记录。从1820年到2024年，我们收集了7个物种的124条经过验证、有时间标记和地理参考的记录，其中大多数（87.9%,n = 109）是中国粟豆、儒艮和土斑蝶（Tursiops aduncus）的出现（按频率排序）。该数据集是新加坡迄今为止最长的海洋哺乳动物记录，用于识别发生热点，并使用历史地图和遥感数据评估其时空动态。在新加坡，儒艮最常见的现象是在两个国际航运航道交汇处的Sungei Johor河口，单个的儒艮搁浅。随着豆荚大小的下降（最明显的是在过去的三十年中），在南部岛屿上观察到中国豆荚和土豆荚重叠的热点。在评估期间，中国沙棘发生在与人类活动更相关的地区，这些地区也远离沿海栖息地。我们的研究结果增加了关于海洋哺乳动物持续利用受人为影响的空间的知识体系，并为新加坡的保护和研究提供了关键建议。这些发现也适用于面临类似人为压力水平的地区，在那里，小型和难以捉摸的海洋哺乳动物种群持续存在。

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引用次数: 0

Macrobenthic community dynamics inform mangrove restoration practices for China 大型底栖生物群落动态为中国红树林恢复实践提供信息

IF 5.4 2区环境科学与生态学 Q1 OCEANOGRAPHY

Ocean & Coastal Management

Pub Date : 2025-12-06 DOI: 10.1016/j.ocecoaman.2025.108049

Yiyong Rao , Danyi Li , Fengxia Wu , Lizhe Cai , Shufei Zhang , Huaxue Liu , Yanping Zhong , Honghui Huang

Mangrove restoration is increasingly promoted as a nature-based solution to climate change, yet its effectiveness in reestablishing macrobenthic diversity remains insufficiently understood. To address this gap, we surveyed macrobenthic communities across natural, non-native, new-planted mangroves, and mudflats in Guangdong, China. Variation partitioning analysis revealed that community structure was jointly shaped by environmental filtering (adjusted R² = 18.6 %) and spatial processes (adjusted R² = 18.7 %). β-Diversity was dominated by species replacement (78.6 %–98.3 %), primarily driven by vegetation characteristics (stand age, height) and physicochemical properties (sediment texture, total organic carbon, salinity, and pH). Neutral community modeling further confirmed substantial stochastic influences and pronounced dispersal limitation (R² = 0.302, m = 0.0031). Contrary to common assumptions, natural mangroves did not host higher species richness or diversity than mudflats, even after accounting for uneven sampling effort across habitats. Instead, they supported distinct, specialized crab assemblages (Camptandriidae, Sesarmidae), whereas mudflats were critical for polychaete diversity. These findings underscore the ecological complementarity of mangroves and mudflats. We recommend that restoration strategies prioritize mangrove-mudflat mosaics to enhance habitat heterogeneity and regional biodiversity, rather than simply maximizing mangrove coverage. Future assessments should incorporate mangrove-specific indicator taxa and employ long-term, multi-season monitoring with balanced sampling designs to better capture successional dynamics and biodiversity patterns.

红树林恢复作为一种基于自然的气候变化解决方案日益受到推崇，但其在重建大型底栖生物多样性方面的有效性仍未得到充分认识。为了解决这一差距，我们调查了中国广东天然、非本地、新种植的红树林和泥滩上的大型底栖生物群落。变异分区分析表明，环境过滤（调整R2 = 18.6%）和空间过程（调整R2 = 18.7%）共同塑造了群落结构。β-多样性以物种替代为主（78.6% ~ 98.3%），主要受植被特征（林龄、高度）和物化特征（沉积物质地、总有机碳、盐度和pH）驱动。中性群落模型进一步证实了大量的随机影响和明显的分散限制（R2 = 0.302, m = 0.0031）。与通常的假设相反，即使在考虑了不同栖息地不均匀的采样努力之后，天然红树林的物种丰富度或多样性并不比泥滩高。相反，它们支持独特的，专门的螃蟹组合（Camptandriidae, Sesarmidae），而泥滩是多毛类多样性的关键。这些发现强调了红树林和泥滩在生态上的互补性。我们建议恢复策略优先考虑红树林-泥滩嵌合体，以增强生境异质性和区域生物多样性，而不是简单地最大化红树林覆盖率。未来的评估应纳入红树林特有的指标分类群，并采用长期、多季节监测和平衡采样设计，以更好地捕捉演替动态和生物多样性模式。

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