Responses of two common coral reef macroalgae to nutrient addition, sediment addition, and mechanical damage

Sura, Shayna A.; Bell, Allison; Kunes, Kristina L.; Turba, Rachel; Songer, Rebecca; Fong, Peggy

doi:10.1016/j.jembe.2021.151512

Cited by 8 publications

(4 citation statements)

References 58 publications

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“…In contrast, one of our species, Sargassum , actually grew the most in ambient nutrient conditions. One possible explanation is Sargassum used extra nutrients from press and pulse treatments towards physical modifications instead of growth, as previous research found nutrient addition caused Sargassum to increase its thallus toughness (Sura et al 2021). As global climate change (IPCC 2022) will likely increase flux of terrestrial nutrients into reef systems via extreme rainfall (Fong et al 2020b), it is critical to improve our understanding of macroalgal growth responses to temporally varying nutrient regimes.…”

Section: Discussionmentioning

confidence: 99%

Press versus pulse nutrient supply and species interactions mediate growth of coral reef macroalgae

Sura

Gehris

Liang

et al. 2023

Oikos

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Globally, ecosystems are experiencing dramatic alterations in the supply of resources, including nutrients. How the temporal regime (press versus pulse), independent of total resource supply, affects growth and species interactions of primary producers remains unexplored. Coral reefs experience anthropogenic modifications to nutrient regimes, making it critical to understand impacts on primary producers, such as macroalgae. In mesocosms, we examined how three macroalgae respond to temporal pattern in nutrient regime (ambient, press, pulse) and species interactions (alone, pairwise, or all together) in terms of their individual growth and assemblage productivity. We found nutrient regime and species interactions influenced individual growth and total assemblage productivity. Press regimes promoted the highest productivity of total assemblages. We observed species interactions ranging from competitive to facilitative varied between macroalgal species and nutrient regimes. Ours is the first study to demonstrate the temporal regime of nutrient delivery, independent of total nutrient supply, strongly impacts the productivity of species assemblages, the nature and outcome of species interactions, and the relative growth rates of individual producer species. As nutrient regimes increasingly fluctuate for coastal marine ecosystems in the Anthropocene, our findings imply macroalgal community composition may also fluctuate. More broadly, our study highlights the importance of assessing primary producer species' responses to varying nutrient regimes to understand factors structuring their communities.

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Section: Discussionmentioning

confidence: 99%

Press versus pulse nutrient supply and species interactions mediate growth of coral reef macroalgae

Sura

Gehris

Liang

et al. 2023

Oikos

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“…Increased sediment loading may also be a factor driving the dominance of fleshy algae. Sediment loading can alter the reef benthos through light attenuation and smothering, as well as deter herbivores from grazing and even displace them entirely [65][66][67]. Cahuita's reefs experienced a significant increase in sediment loading from the 1950s to the 1980s, thought to be associated with extensive logging and the establishment of banana plantations in the area [27].…”

Section: Discussionmentioning

confidence: 99%

Status of Coral Reef Communities on the Caribbean Coast of Costa Rica: Are We Talking about Corals or Macroalgae Reefs?

Quezada-Perez,

Mena,

Fernández-García

et al. 2023

Oceans

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In the past decades, one of the most widely reported phenomena on Caribbean reefs is the general fall in coral cover and rise in macroalgae. Reefs with low coral cover and high macroalgal abundances are often presumed to provide poorer ecosystem functions and services. In this study, we assessed the condition of coral reefs on the Caribbean Coast of Costa Rica and determined how eight key ecosystem metrics varied in response to different coral and fleshy macroalgae covers. Most reefs surveyed had high fleshy macroalgae and low live coral covers, with an average (±SD) of 31 ± 28% and 14 ± 13% per site. The value of many of the ecosystem metrics estimated for coral reefs of the region appears to be lower than what has been reported for other areas in the Caribbean. We found that the rugosity, urchin density, fish richness, total fish biomass, large fish density, and the potential fishery value of the reef were higher in sites with low fleshy macroalgae covers (<10%). Our results concur with the prevailing paradigm that an increase in macroalgae abundance could reduce the ecosystem services provided by coral reefs.

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“…Penangkapan ikan yang berlebihan dan polusi dapat menggeser komposisi komunitas bentik menjauh dari karang batu dan menuju makroalga (Brauwer, 2017); 4. Wisata selam memberi dampak langsung terhadap ekosistem terumbu karang yaitu meningkatnya sedimentasi, patahan dan penyakit yang menyebabkan penurunan dalam kekayaan dan kelimpahan karang keras (Luna et al, 2009;Lyons et al, 2015;Palma et al, 2019); 5. mengakibatkan menurunnya resistensi hewan karang, meningkatkan proliferasi bakteri patogen, serta membantu mentransmisi penyakit pada karang (Cramer et al, 2012;Sura et al, 2021).…”

Section: Pendahuluanunclassified

Potensi Muck Dive di Perairan Kecamatan Buleleng Bali

et al. 2023

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Kawasan Pesisir Kecamatan Buleleng terdiri dari Pantai Desa Kalibukbuk, Anturan, Tukad Mungga, Pemaron, Baktiseraga, Banyuasri, Kaliuntu, Kampung Anyar, Kampung Bugis, Kampung Baru, Banyuning, dan Penarukan merupakan kawasan perairan yang berada di pusat Kabupaten Buleleng. Perairan Kecamatan Buleleng memiliki karakteristik subsrat perairan berupa hamparan terumbu karang, patahan karang, pasir yang didominasi oleh pasir hitam, dan berlumpur. Kondisi subsrat memiliki potensi pengembangan wisata muck dive sebagai alternatif wisata bahari yang berkelanjutan. Muck dive merupakan jenis penyelaman yang dilakukan di subsrat berlumpur dengan berfokus untuk menemukan jenis langka dan samar yang jarang ditemukan di terumbu karang. Penelitian bertujuan mengetahui potensi muck dive dengan memperkuat data identifikasi jenis, kelimpahan dan keanekaragaman organisme yang dapat dijadikan sebagai ikon obyek wisata selam. Peneltian menggunakan metode underwater visual sensus dengan mengikuti line transect. Penelitian menunjukkan Perairan Kecamatan Buleleng memiliki potensi pengembangan wisata muck dive dengan karakteristik di setiap perairan desa yang beragam berdasarkan tipe subsrat perairan. Kelimpahan dan keanekaragaman jenis organisme sebagai obyek muck dive tertinggi terdapat di Pantai Desa Baktiseraga, Banyuasri, dan Kaliuntu, sedangkan terendah di Desa Kampung Anyar, Kampung Bugis, Kampung Baru, Banyuning, dan Penarukan. Potensi wisata muck dive layak dikembangkan sebagai alternatif wisata bahari yang dikelola secara berkelanjutan. The coastal area of Buleleng districts consists of Kalibukbuk, Anturan, Tukad Mungga, Pemaron, Baktiseraga, Banyuasri, Kaliuntu, Kampung Anyar, Kampung Bugis, Kampung Baru, Banyuning, and Penarukan are water areas located in the center of Buleleng Regency. The Buleleng districts water have the characteristics of the water substrate in the form of coral reefs, coral fractures, sand dominated by black sand, and muddy. Substrate conditions have the potential to increase muck dive tourism as an alternative to sustainable marine tourism. Muck dive is a type of diving that is carried out in muddy substrates with a focus on finding rare and rare species that are rarely found in coral reefs. This study aims to determine the potential of muck dive by strengthening the identification data of species, abundance and diversity of organisms that can be used as icons of diving tourism objects. The research uses the underwater visual census method by following the line transect.The research shows that the Buleleng districts waters have the potential to develop muck dive tourism with different characteristics in each village waters based on the type of substrate. The highest abundance and diversity of organisms as muck dive objects was found in Baktiseraga, Banyuasri, and Kaliuntu Beaches, while the lowest was in Kampung Anyar, Bugis, Kampung Baru, Banyuning, and Penarukan villages. This potential to be the one of alternative for marine tourism which is must managed sustainably.

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Responses of two common coral reef macroalgae to nutrient addition, sediment addition, and mechanical damage

Cited by 8 publications

References 58 publications

Press versus pulse nutrient supply and species interactions mediate growth of coral reef macroalgae

Press versus pulse nutrient supply and species interactions mediate growth of coral reef macroalgae

Status of Coral Reef Communities on the Caribbean Coast of Costa Rica: Are We Talking about Corals or Macroalgae Reefs?

Potensi Muck Dive di Perairan Kecamatan Buleleng Bali

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