Boundary Delimitation Research Articles

The use of old demarcations to recover vanished landscapes: a case study in Doñana (SW Spain)

This study emphasises the value of surveys, demarcations, and boundary delimitations in uncovering vanished landscapes and understanding the origins of present ecosystems, with a particular focus on Doñana, Spain. A 1661 delimitation was examined providing detailed information on the state of vegetation and ecosystems at the time it was conducted, as well as the processes and disappearance of elements now buried under the mobile dunes. This information was combined with historical maps and documents to gain a better understanding of the area’s ecological history. The demarcation revealed previously unknown aspects, such as the penetration point of the mobile dunes, some vanished ponds, and the drainage of the Santa Olalla pond towards the sea. It also revealed lost and relocated place names, shedding light on their significance through additional historical research and fieldwork. The findings highlight the importance of demarcations in reconstructing vanished landscapes and understanding the genesis of current ecosystems.

DISPUTE SETTLEMENT MECHANISMS UNDER THE UNITED NATIONS CONVENTION ON THE LAW OF THE SEA 1982: THE WAY FORWARD FOR MALDIVES

The maritime boundary delimitation judgment by the International Tribunal for the Law of the Sea between Mauritius and the Maldives was the first Maldivian dispute settled at an international court or tribunal. Regrettably, misinterpretation and misinformation regarding international laws and the Maldivian domestic laws related to the dispute became prevalent among the Maldivian community. One of the core concerns that need to be addressed is how Maldives got subjected to a legally binding dispute settlement mechanism concerning a dispute that was initially regarding the sovereignty over the Chagos Archipelago between two other States, namely: Mauritius and the United Kingdom. Additionally, it is important to determine whether Maldives has any other legal means to safeguard its maritime zones from future maritime disputes. The main objective of this paper is to explore the dispute settlement mechanisms under Part XV of the United Nations Convention on the Law of the Sea (LOSC) and determine how these provisions can be utilised to safeguard the Maldivian maritime zones. This research is primarily a doctrinal legal research. Firstly, the article outlines the provisions under Part XV of the LOSC whilst exploring its drafting history. Next, the article analyses the optional exception on maritime delimitation under LOSC Article 298(1)(a) and its significance to the Maldivian situation. It suggests that considering the undelimited outer continental shelves of Maldives, Maldives should consider declaring an optional exception under LOSC Article 298(1)(a). The article concludes that optional declarations serve as safeguards against premature and costly dispute resolution.

Diaporthe Species on Palms: Molecular Re-Assessment and Species Boundaries Delimitation in the D. arecae Species Complex.

Due to cryptic diversification, phenotypic plasticity and host associations, multilocus phylogenetic analyses have become the most important tool in accurately identifying and circumscribing species in the Diaporthe genus. However, the application of the genealogical concordance criterion has often been overlooked, ultimately leading to an exponential increase in novel Diaporthe spp. Due to the large number of species, many lineages remain poorly understood under the so-called species complexes. For this reason, a robust delimitation of the species boundaries in Diaporthe is still an ongoing challenge. Therefore, the present study aimed to resolve the species boundaries of the Diaporthe arecae species complex (DASC) by implementing an integrative taxonomic approach. The Genealogical Phylogenetic Species Recognition (GCPSR) principle revealed incongruences between the individual gene genealogies. Moreover, the Poisson Tree Processes' (PTPs) coalescent-based species delimitation models identified three well-delimited subclades represented by the species D. arecae, D. chiangmaiensis and D. smilacicola. These results evidence that all species previously described in the D. arecae subclade are conspecific, which is coherent with the morphological indistinctiveness observed and the absence of reproductive isolation and barriers to gene flow. Thus, 52 Diaporthe spp. are reduced to synonymy under D. arecae. Recent population expansion and the possibility of incomplete lineage sorting suggested that the D. arecae subclade may be considered as ongoing evolving lineages under active divergence and speciation. Hence, the genetic diversity and intraspecific variability of D. arecae in the context of current global climate change and the role of D. arecae as a pathogen on palm trees and other hosts are also discussed. This study illustrates that species in Diaporthe are highly overestimated, and highlights the relevance of applying an integrative taxonomic approach to accurately circumscribe the species boundaries in the genus Diaporthe.

Vietnam - Indonesia Cooperation on Sea Definition: Practice and Meaning

Vietnam has a long coastline and a large sea area, with several islands and archipelagoes, particularly the Hoang Sa and Truong Sa archipelagoes. Therefore, Vietnam's main objectives during the process of national construction and growth are maritime security in particular and the safeguarding of the integrity of its land, sea, and airspace. Vietnam consistently emphasizes cooperation with regional nations to achieve this objective in particular. According to the United Nations Convention on the Law of the Sea 1958, Vietnam shares maritime borders with China and Cambodia, and shares continental shelf boundaries with China, Indonesia, Malaysia, Cambodia and Thailand. Currently, according to the United Nations Convention on the Law of the Sea (UNCLOS) in 1982, the boundary of Vietnam's exclusive economic zone and continental shelf is expanded and adjacent to many countries. Besides the well-defined sea areas with neighboring countries (Thailand, Indonesia), Vietnam is still negotiating some of the remaining sea ares with China, Malaysia and Cambodia. Among the countries with which Vietnam has completed negotiations on maritime delimitation, the cooperation between Vietnam and Indonesia on maritime delimitation is very important, creating a premise for a clearer maritime boundary delimitation with other countries and contributing to promoting the development of the Vietnam - Indonesia Strategic Partnership to a new level. This article will present and analyze the cooperation relationship on maritime delimitation between Vietnam and Indonesia from the perspective of international studies.

Role of Voter Education and Performance of Electoral Management Body: A Case of Independent Electoral and Boundary Commission Kenya

This paper focuses on the role of voter education on performance of electoral management body. The study is undertaken at Independent Electoral and Boundary Commission (IEBC) Kenya. The study was grounded on civic engagement theory. The study was a descriptive research design investigation. The target population involved 772 commission officers with a sample size of 264 based on the Cochran formula. The IEBC officers were selected through use of stratified random sampling technique. The data collection tools were the questionnaire and interview schedule. Data collected from the field was analysed using qualitative and inferential statistics. Qualitative data analysis involved categorising responses from interviews and open-ended questions into themes and sub themes while inferential statistics was analysed using the Regression Model to test the hypothesis. The study found out that one of the pre-electoral strategies that IEBC focused on was voter education to the members of the public on regular occasion. The respondents indicated that the EMB conducted regular mobilisation campaigns jointly with other stakeholders to inform members of the public on matters relating to commission mandate in elections and boundary delimitations. Correlation statistics revealed existence of significant positive effect of pre-electoral voter education strategy and IEBC Kenya performance. It was concluded that voter education strategy played a significant role in predicting IEBC performance in Kenya. The study recommends that voter education needs to be done on continuous basis rather than waiting one year to the general election by regularly seeking funds support from government and non-government sources to support voter education

Developing a near-seamless tidal datum by integrating tidal and satellite altimetry data with a Digital Elevation Model for maritime boundary delimitation

ABSTRACT The delimitation of maritime boundaries plays a significant role in preserving the country’s sovereignty and jurisdiction. The maritime baseline was established based on the combination of maritime basepoints, which represents the Lowest Astronomical Tide (LAT) along the coast. However, the current approach still relies on the limited and sparsely distributed tide gauge stations for the determination of LAT. Therefore, this study aims to develop the Peninsular Malaysia Near-Seamless Tidal Datum (PMNSTD) by integrating tide gauge, satellite altimetry, and Tide Model Driver (TMD) data. PMNSTD was further integrated with Digital Elevation Models (DEM) for the delimitation of maritime boundaries. This study methodology includes data acquisitions of 12 tide gauge stations along the coast of Peninsular Malaysia, satellite altimetry data for TOPEX, Jason-1, Jason-2, and GEOSAT Follow-On (GFO) from Radar Altimeter Database System (RADS), TMD, and TerraSAR-X add on for Digital Elevation Measurement 30 m (TanDEM-X) data. The tide gauge, satellite altimetry, and TMD data encompass 23 years of tidal observation data from 1993 to 2015. For the derivation of the tidal datum, the tide gauge and satellite altimetry data were analysed using harmonic analysis in UTide, whereas, for the TMD data, the tidal datum was determined based on tidal prediction. For compatibility in data integration, the derived Lowest and Highest Astronomical Tide (LAT and HAT) from tide gauge, satellite altimetry, and TMD data were referenced to the Mean Sea Level (MSL), denoted as and respectively. Next, the and was interpolated using Inverse Distance Weighting (IDW) to develop the PMNSTD (and ) using ArcGIS. The statistical assessment indicates that the PMNSTD ( and ) established from the integration of tide gauge, satellite altimetry, and TMD has a better agreement with the Department of Survey and Mapping Malaysia (DSMM) tide gauges with a Root Mean Square Error (RMSE) and Standard Deviation (STD) of 0.228 m and 0.175 m for , as well as 0.159 m and 0.079 m for . Next, the PMNSTD () was integrated with TanDEM-X using ArcGIS and SURFER for the delimitation of maritime boundaries. The reliability assessment illustrated a significant improvement in the continuation of 201 maritime basepoints in comparison to the 95 maritime basepoints by the DSMM. In conclusion, the proposed approach has shown a continuous, consistent, and wider establishment of the country’s maritime baseline for the Peninsular Malaysia region.

Furthering Automatic Feature Extraction for Fit-for-Purpose Cadastral Updating: Cases from Peri-Urban Addis Ababa, Ethiopia

Fit-for-purpose land administration (FFPLA) seeks to simplify cadastral mapping via lowering the costs and time associated with conventional surveying methods. This approach can be applied to both the initial establishment and on-going maintenance of the system. In Ethiopia, cadastral maintenance remains an on-going challenge, especially in rapidly urbanizing peri-urban areas, where farmers’ land rights and tenure security are often jeopardized. Automatic Feature Extraction (AFE) is an emerging FFPLA approach, proposed as an alternative for mapping and updating cadastral boundaries. This study explores the role of the AFE approach for updating cadastral boundaries in the vibrant peri-urban areas of Addis Ababa. Open-source software solutions were utilized to assess the (semi-) automatic extraction of cadastral boundaries from orthophotos (segmentation), designation of “boundary” and “non-boundary” outlines (classification), and delimitation of cadastral boundaries (interactive delineation). Both qualitative and quantitative assessments of the achieved results (validation) were undertaken. A high-resolution orthophoto of the study area and a reference cadastral boundary shape file were used, respectively, for extracting the parcel boundaries and validating the interactive delineation results. Qualitative (visual) assessment verified the completed extraction of newly constructed cadastral boundaries in the study area, although non-boundary outlines such as footpaths and artifacts were also retrieved. For the buffer overlay analysis, the interactively delineated boundary lines and the reference cadastre were buffered within the spatial accuracy limits for urban and rural cadastres. As a result, the quantitative assessment delivered 52% correctness and 32% completeness for a buffer width of 0.4 m and 0.6 m, respectively, for the interactively delineated and reference boundaries. The study proposed publicly available software solutions and outlined a workflow to (semi-) automatically extract cadastral boundaries from aerial/satellite images. It further demonstrated the potentially significant role AFE could play in delivering fast, affordable, and reliable cadastral mapping. Further investigation, based on user input and expertise evaluation, could help to improve the approach and apply it to a real-world setting.

Exploring the Diversity and Systematics of Phaeosphaeriaceae: Taxonomic Novelties from Ecologically Diverse Habitats and Their Phylogenetic Resolution.

The family Phaeosphaeriaceae is a diverse group of ascomycetous fungi that are commonly found in terrestrial habitats worldwide. In recent years, there has been increasing interest in the biodiversity of Phaeosphaeriaceae in China, particularly in Sichuan Province, which has not been fully explored for its high fungal diversity. In our study, we conducted extensive surveys in Sichuan Province to identify and describe new species of Ascomycota with diverse habitats. Here, we present a taxonomic revision of Phaeosphaeriaceae with taxonomic novelties from terrestrial habitats in Sichuan Province based on a multi-gene phylogenetic approach. Our study focuses on the description of four new species of Phaeosphaeriaceae, representing novel additions to the diversity of this fungal family. Using a combination of morphological and molecular data, we provide detailed descriptions of the new taxa and their placement within the family. Additionally, we discuss the phylogenetic relationships of these new taxa with other members of Phaeosphaeriaceae, providing insights into the correct taxonomic classification of the family. Our taxonomic revision contributes to understanding fungal diversity in China and provides a foundation for future studies investigating the taxonomy and ecological roles of Phaeosphaeriaceae fungi. Furthermore, our multi-gene phylogenetic approach provides increased resolution and accuracy in the delimitation of species boundaries within the family. Our study highlights the importance of continued exploration and taxonomic revision in order to fully understand the diversity and distribution of fungal species in China and beyond. New species:Paraloratospora sichuanensis, Phaeosphaeria chengduensis, P. sichuanensis, and Septoriella shoemakeri. New combinations:Paraloratospora breonadiae, P. fructigena, Septoriella ammophilicola, S. asparagicola, S. festucae, S. luzulae, and S. verrucispora. New names:Septoriella paradactylidis, and S. neomuriformis.

Industrial and small-scale fisheries relations in Ghana: A political ecology perspective on blue economy exclusion

The fisheries sector in Ghana is a significant source of livelihood for many communities along the coast. However, the sector faces several challenges, including the power dynamics between the industrial bottom trawl industry and small-scale fishers. The concept of resource scarcity has frequently been used to characterise conflicts between industrial vessels and small-scale canoes in Ghana. This paper seeks to build on this dominant narrative that resource scarcity is the key driver of conflicts, arguing that exclusion, and resistance to exclusion can also explain contemporary conflicts in marine fisheries, and that indeed apparent resource scarcity can be caused by exclusion. A political ecology lens reveals that fisheries conflict in Ghana is entwined with established and emerging socio-political domains of exclusion, namely, regulation, legitimisation, force, and the market. We explain how contradictory regulations and ambiguous boundary delimitations, combined with a long period of weak enforcement, have helped industrial trawlers exploit fisheries in ways that exclude small-scale fishers. Additionally, with foreign-aid diplomacy legitimising the expansion of foreign-owned industrial trawlers, the infiltration of illegal catch into the small-scale value chain harms local businesses. We conclude that conflict serves as both a tool and a symptom of exclusion through its connection to regulatory, jurisdictional, and political contexts, as well as market dynamics.

Integrative taxonomy and revision of the Neotropical Biomphalaria tenagophila (Mollusca: Planorbidae) complex taxa

ABSTRACT Morphological and molecular studies of the taxa of the Biomphalaria tenagophila complex were conducted on specimens from Argentina, Brazil, Paraguay, Peru, Uruguay and Venezuela. The morphological analysis included aspects of the shell, mantle, excretory organs and reproductive system. DNA barcode, ABGD and mPTP were used to group specimens into Operational Taxonomic Units (OTUs) and in attempt to solve species boundary delimitation problems within the Biomphalaria tenagophila complex. Population analyzes were also performed based on the cytochrome C oxidase I (COI) and 16S genes. The seminal vesicle, extension of the oviduct in relation to the distal ovispermioduct, vaginal pouch, aspect of the penial complex, aspect of the prepuce diaphragm, diaphragm papilla, extension of the penial sheath in relation to the prepuce and prepuce dimensions are essential for the determination of the taxa of the Biomphalaria tenagophila complex. An updated molecular phylogeny for Biomphalaria based on COI, 16S and ITS2 genes is presented and recover Biomphalaria tenagophila complex as monophyletic. The morphological, population and phylogenetic data observed in an integrated way define taxonomic questions, such as the proposition of a new status for B. guaibensis, which integrates into the Biomphalaria tenagophila complex. http://www.zoobank.org/urn:lsid:zoobank.org:pub:478145E5-D4A5-4128-AA80-DB6A69164E1E

People, State and Border: Examining Bangladesh-Myanmar Border Relations

Bangladesh has two immediate neighbors, India and Myanmar. Bangladesh shares both land and maritime border with Myanmar. After a long-standing maritime boundary delimitation dispute, Bangladesh and Myanmar resolved the dispute peacefully in 2012. However, Bangladesh-Myanmar land border often becomes a source of tension which often results in the killing of the members of the security forces and the innocent people. It is worthy to note that in September 2022, Myanmar mobilized troops on its border with Bangladesh. In addition, human trafficking, drugs trafficking, and arms trafficking are regular phenomenon in Bangladesh-Myanmar border. After August 2017 violence and torture by the Myanmar armies to the Rohingya people, more than 1.1 million Rohingyas fled Myanmar and took shelter in Bangladesh through Bangladesh-Myanmar border. Despite the existing challenges with severe implications, Bangladesh-Myanmar border issue has remained understudied. Against this backdrop, this article tries to understand border cooperation and challenges between Bangladesh and Myanmar.

The New Italian Exclusive Economic Zone and Italy-Montenegro Maritime Boundary Delimitation

The paper examines the newly proclaimed Italian Exclusive Economic Zone and its impact on the delimitation of the maritime boundaries between Italy and Montenegro. By Law No. 91 of 14 June 2021, published in the Official Journal No. 148 of 23 June 2021, the Italian Parliament proclaimed its Exclusive Economic Zone (EEZ), to allow Italy to fully project its economic rights over an area of the sea extending up to 200 miles from its shores or up to the limit allowed by international law. In line with the trend of progressive extension of the jurisdiction of coastal states in waters beyond their territorial sea in the Mediterranean, this measure is taken in compliance with the United Nations Convention on the Law of the Sea (UNCLOS) to allow the country to protect its economic activities, and biodiversity protection. Anyway, even if the law authorizes the EEZ establishment, a further ad hoc measure is required to this aim. Its delimitation will take place primarily based on agreements: Italy is supposed to negotiate new agreements with the neighboring Countries, including Montenegro, in order to define its boundaries.

Widespread coexistence of genetically distinct morphotypes in theSatyrium longicaudacomplex (Orchidaceae)

AbstractSpecies-level taxonomy is traditionally based on herbarium collections that typically include few, or even single, representatives per site. This can lead to underestimation of diversity when there are sympatric populations of superficially similar plants belonging to different lineages. Satyrium longicauda (Orchidaceae) represents a taxonomic challenge for the delimitation of species boundaries due to the high degree of morphological variation detected within and among populations. Currently, just two varieties are accepted based mainly on length differences of the lateral sepal and nectar spur. However, there is extensive morphological variation within South African populations and evidence for several pollination ecotypes, indicating that this taxon represents an actively diverging species complex. Here, we evaluate intraspecific morphological variation through uni- and multivariate morphometrics and analyse internal transcribed spacer sequences for individuals sampled from 36 sites, including 14 sites where divergent morphotypes occur sympatrically. Morphometric analyses of 1802 individuals revealed the presence of eight morphotypes based on vegetative and floral characters. Up to six morphologically and genetically distinct morphotypes can coexist in sympatry. Morphological and genetic distances among populations were significantly correlated. Phylogenetic analyses of 120 accessions indicated that neither of the two varieties nor S. longicauda as a species is monophyletic, and provided evidence for the monophyly of some of the morphotypes including the newly described S. cernuiflorum. The presence of distinct morphological and genetic sympatric variants, which in several cases scale up to distinct evolutionary lineages, is consistent with the existence of different taxa according to morphological and biological species concepts. Our results therefore confirm that taxonomy based mainly on herbarium collections can grossly under-estimate actual diversity of disparate lineages, although further work is required to finalize taxonomic decisions. These findings have implications for efforts to estimate species diversity in groups that are in the process of diversifying and for conservation practice.

The Demarcation of Malaysia-Indonesia Maritime Boundaries: A Review

This research paper analyses the convention underpinning delimitation of Malaysia-Indonesia maritime boundaries. The study analyses international legal frameworks and customary international law, and their application to maritime boundary disputes. The research reveals that 1982 UNCLOS provides general principles and guidelines for delimitating maritime boundaries but does not offer a definitive solution to the complex disputes between states. The research concludes that delimiting maritime boundaries between Malaysia and Indonesia requires a comprehensive and context-specific approach considering legal, historical, and equitable considerations. The study recommends that Malaysia and Indonesia engage in a constructive and cooperative dialogue based on mutual respect, good faith, and pacifistic settlement of disputes. The study also highlights the significance of supporting the rule of law and obeying international law principles in fostering regional political stability. The normative juridical method of research provides a valuable contribution to understanding the legal principles governing the delimitation of maritime boundaries. It offers practical recommendations for resolving disputes between Malaysia and Indonesia in a manner that upholds international law and promotes regional cooperation.

The Maltese single transferable vote experience: a case study of gerrymandering?

AbstractRe-drawing the electoral boundaries to provide benefit to one particular political party and thereby damaging the principle of representation in democracy has been a core issue in political science in the recent years. For years social scientists have been advocating the idea of measuring or preventing the potential for damage that may arise from the existence of the above-mentioned redistricting process. Following this discussion, we investigate the possible gerrymandering phenomenon that might have arisen, or whether there are any asymmetries or partisan biases due to boundary delimitation of the electoral constituencies in the case of the Maltese general elections. From the evidence of various statistical tests and simulations, our conclusion is that we find no evidence of gerrymandering in the 2013 and 2017 Maltese general elections.

Maritime Zones Subject To Boundary Delimitation Under International Law

Territorial sea, contiguous zone, exclusive economic zone, and continental shelf are the maritime zones that, in the majority of circumstances, would be subject to boundary delimitation. States may occasionally need to define the boundaries of additional maritime areas, including the internal waterways. Before 1945, delimitation between States with opposite or near coasts was explained in this article. The International Law Commission began its work in 1949 by giving precedence to the high seas regime, which encompassed the continental shelf, and concentrating when Unclose was formed.

Phylogenetics of the Andean tree genusRuagea(Meliaceae): implications for taxonomy

AbstractRuagea (Meliaceae) comprises c. 15 species of small or medium-sized trees distributed in Central and South America, predominantly in montane rain forest and cloud forest of the Andes. The taxonomic position of Ruagea has changed several times in the past, and it was previously included in Guarea. Ruagea is currently accepted as a separate genus based on morphology and molecular phylogenetic analyses at the family level. However, its monophyly has not been accurately tested, and phylogenetic relationships among species are still largely unknown. In addition, delimitation of species boundaries is not straightforward due to morphological diversity within species. Here, we present the first phylogenetic reconstruction of Ruagea based on two nuclear ribosomal (ITS, ETS) and two plastid DNA regions (rps4-trnT, psbA-trnH). Our results show that Ruagea is monophyletic and composed of four main clades (A, B, C and D). Clade D, comprising the Ecuadorian endemic R. membranacea and a potentially new species from Colombia, is sister to the rest of the genus. Our results demonstrate that R. membranacea and R. insignis are monophyletic and provide support for the recognition of two new species with divergent morphologies. The delimitation of the remaining species remains unresolved as they are recovered as either poly- or paraphyletic. Our results highlight the complexity of the taxonomy of Ruagea, as found in other rainforest taxa, and the need for further detailed analyses to delimit these taxa. This study provides the first and most extensive phylogenetic analysis of the genus so far, representing a contribution towards understanding the evolutionary history of Ruagea.

Does the international Court of Justice have an impact on security on the African Continent?

Africa has been home to several conflicts and insecurity due to several challenges ranging from climate change, hunger and malnutrition, diseases, increase in population and the scramble for the scanty resources on the continent. Among the problems in the continent is the border/territorial dispute occasioned by the demarcation and delimitation of boundaries by the colonial masters. These conflicts relating to border or territorial boundaries have exacerbated. Some of these cases were filed before the ICJ for adjudication and settlement. It is in the light of this that this paper examines the impact of the ICJ on security in Africa. The paper adopts the doctrinal method and examines the purpose of the League of Nations and the United Nations. The paper finds that the League and UN Charter encourages pacific settlement of disputes which includes judicial settlement. The paper notes that ICJ is the principal judicial organ of the UN and that the ICJ has settled several boundary disputes in Africa. Without the intervention of the ICJ these disputes had the potential to cause instabilities and full-scale wars. It observes that these settlements engenders peace and security and increases the confidence of African states in the Court. It further observes that ICJ also resolves cases that do not have boundary colorations. The paper notes that African states are willing to implement the decisions of the Court although they have not done so to demonstrate their willingness and readiness to obey international law. Instead there have been external influences or motives that have greatly contributed to the way states respond to the Court’s decision and notes that it can be argued that states have quickly complied with the decision of the ICJ when such decisions are in line with their domestic or political interests. The involvement of ICJ in resolving disputes in the region further reveals the continents growing confidence in the Court as the appropriate forum to resolve their disputes. This confidence has been demonstrated by the willingness of some African States to submit cases unrelated to territorial boundaries to the ICJ. These submissions reaffirm not only the willingness of parties to seek intervention of the ICJ to settle their disputes, but also the role and supremacy of the rule of law as the guiding framework to settle disputes among parties. The choice of the Court as a neutral arbiter removes the likelihood of bitter confrontation between governments and their peoples, particularly local communities, who may be unwilling to accept the outcome of the dispute. Based on the findings and observations, the paper recommends that ICJ should co-opt other regional and continental mechanisms in resolving boundary disputes. The paper notes the achievement of the AUBP and further recommends that ICJ should be a court of last resort for states. It then concludes by noting that Africa must be ready to find African solutions to African problems as regional mechanisms have better chances of understanding and resolving disputes better.

Not out of the Mediterranean: Atlantic populations of the gorgonian Paramuricea clavata are a separate sister species under further lineage diversification.

The accurate delimitation of species boundaries in nonbilaterian marine taxa is notoriously difficult, with consequences for many studies in ecology and evolution. Anthozoans are a diverse group of key structural organisms worldwide, but the lack of reliable morphological characters and informative genetic markers hampers our ability to understand species diversification. We investigated population differentiation and species limits in Atlantic (Iberian Peninsula) and Mediterranean lineages of the octocoral genus Paramuricea previously identified as P.clavata. We used a diverse set of molecular markers (microsatellites, RNA-seq derived single-copy orthologues [SCO] and mt-mutS [mitochondrial barcode]) at 49 locations. Clear segregation of Atlantic and Mediterranean lineages was found with all markers. Species-tree estimations based on SCO strongly supported these two clades as distinct, recently diverged sister species with incomplete lineage sorting, P. cf. grayi and P.clavata, respectively. Furthermore, a second putative (or ongoing) speciation event was detected in the Atlantic between two P. cf. grayi color morphotypes (yellow and purple) using SCO and supported by microsatellites. While segregating P. cf. grayi lineages showed considerable geographic structure, dominating circalittoral communities in southern (yellow) and western (purple) Portugal, their occurrence in sympatry at some localities suggests a degree of reproductive isolation. Overall, our results show that previous molecular and morphological studies have underestimated species diversity in Paramuricea occurring in the Iberian Peninsula, which has important implications for conservation planning. Finally, our findings validate the usefulness of phylotranscriptomics for resolving evolutionary relationships in octocorals.

The next step for China's national park management: Integrating ecosystem services into space boundary delimitation

The contradiction between ecological conservation and economic development posed significant challenges to the management of National Parks. From the perspective of Ecological Economics, the cause of the contradiction is the difficulty of creating monetary profits from biodiversity conservation, which is the primary target of National Parks. Integrating Ecosystem Services (ESs) into space boundary delimitation is the next step in National Park management since ESs are closely related to human well-being and can provide monetary benefits. Extending the boundary of the National Park to high-ES areas and promoting ES trading can help generate funds for ecological restoration. Using the Sanjiangyuan National Park (SNP) as an example, this study proposed integrating ESs into National Park delimitation for sustainable National Park management. It was found that the current SNP boundary provides insufficient coverage of high-ES areas, while most of the multiple ES supply areas were dispersed to SNP's southeast edge. The Core conservation area showed the most prominent contradiction between ecological conservation and economic development, resulting in many low-level ES sites in the Traditional use area failing to be included in the Restoration area for protection. Future approaches would be well-advised to re-adjust SNP boundary by expanding the ES hotspot areas on the southeastern edge of SNP, as well as expanding funding sources via ecological product trade and other tools to supplement the input for ecological restoration. Overall, this study can act as a reference for optimizing National Parks within and beyond China, and promote the understanding of the Ecological Economy and sustainable development.