NOAA Prof. Paper NMFS 16: The ecology of deep-sea coral and sponge habitats of the central Aleutian Islands of Alaska

Stone, Robert P.

doi:10.7755/pp.16

Cited by 22 publications

(53 citation statements)

References 21 publications

(32 reference statements)

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“…We have observed patches in shallow water at many locations throughout Southeast Alaska, the Gulf of Alaska, and the central Aleutian Islands and in deeper water (to 512 m depth) throughout its range [12]. Populations in shallow-water areas of Southeast Alaska provided a rare opportunity to study the growth of this widely distributed coral on a broad geographical scale.…”

Section: Discussionmentioning

confidence: 99%

“…At least 59 gorgonian species (Class Anthozoa, Subclass Octocorallia, Order Alcyonacea, Suborders Calcaxonia, Holaxonia, and Scleraxonia) inhabit Alaska waters, and approximately 63% [12] occur within the depth zone of current fishing activities (approximately 80–1000 m). Several species attain large size and/or form extensive coral garden or thicket habitats that provide essential habitat in the form of structure and refuge for some species of demersal fish and invertebrates [13, 1, 3, 4].…”

Section: Introductionmentioning

confidence: 99%

“…Several species attain large size and/or form extensive coral garden or thicket habitats that provide essential habitat in the form of structure and refuge for some species of demersal fish and invertebrates [13, 1, 3, 4]. Most Alaska gorgonians inhabit depths which limit routine in situ observations and the collection of measurements; consequently, little is known about their life history.…”

Section: Introductionmentioning

confidence: 99%

“…spiculifera is one of 11 taxa in the Suborder Holaxonia and one of five taxa in the Family Acanthogorgiidae in Alaska waters. It is distributed from central British Columbia through the Gulf of Alaska (GOA) to the western Aleutian Islands at depths between 15 and 512 m [14, 15, 12]. It forms single-species assemblages in areas of bedrock outcropping in Southeast Alaska [7], the eastern GOA [4], and in the Aleutian Islands [1] where it is also a minor component of coral gardens [1, 3].…”

Section: Introductionmentioning

confidence: 99%

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A Five-Year, In Situ Growth Study on Shallow-Water Populations of the Gorgonian Octocoral Calcigorgia spiculifera in the Gulf of Alaska

2017

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Gorgonian octocorals are the most abundant corals in Alaska where they provide important structural habitat for managed species of demersal fish and invertebrates. Fifty-nine gorgonian species have been reported from Alaska waters but little is known about their life history characteristics to help us gauge their ability to recover from seafloor disturbance. Colonies of the holaxonian Calcigorgia spiculifera were tagged beginning in 1999 at three sites in Chatham Strait, Southeast Alaska, using scuba and their growth measured annually for up to 5 years. Colonies were video recorded, and computer image analysis tools provided calibration of video images for measuring the length of several branches. Growth data indicate that C. spiculifera grows much slower (6.0 mm yr-1) than other gorgonians in Alaska for which there are data and that intraspecific growth is highly variable. We fit a Bayesian linear mixed-effects model that showed that average colony growth was significantly reduced with warmer temperature and presence of necrosis. The model further indicated that growth may slow among larger (older) colonies. Based on these results and previous studies, we propose that gorgonian growth rates are taxonomically constrained at the Suborder level and that holaxonians grow the slowest followed by scleraxonians and calcaxonians (2–3 times as fast). Findings of this study indicate that it would take approximately 60 years for C. spiculifera to grow to its maximum size and depending on the location and size of the parental standing stock, at least one and possibly 10 additional years for recruitment to occur. Our results further indicate that colonies that are injured, perhaps chronically in areas of frequent disturbance, grow at slower rates and if the current trend of ocean warming continues then we can expect these corals to grow more slowly, and the habitats they form will require more time to recover from disturbance.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Five-Year, In Situ Growth Study on Shallow-Water Populations of the Gorgonian Octocoral Calcigorgia spiculifera in the Gulf of Alaska

2017

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“…In 2002 a research programme was initiated to study seafloor habitat and biodiversity along the oceanic ridge that supports the volcanic archipelago (Stone, 2014). The research included the collection of sponge specimens with submersibles and remotely operated vehicles and as by-catch during fishery surveys.…”

Section: Introductionmentioning

confidence: 99%

Two new species of sponges (Porifera, Demospongiae) from the Aleutian Islands, Alaska

Lehnert

Stone

2014

J. Mar. Biol. Ass.

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Two new demosponges, Megaciella pituitosa and Cladocroce toxifera, are described from the Aleutian Islands, fostering our contention that the region is a hotspot of poriferan biodiversity. Seven of the thirteen species of Megaciella now known worldwide occur in the Sea of Okhotsk or around the Aleutian Islands. Similarly, five of the sixteen species of Cladocroce known worldwide occur in Alaska. Megaciella pituitosa sp. nov. possesses two categories of choanosomal styles and spicules of different sizes that differentiate it from all known congeners. Cladocroce toxifera sp. nov. differs from all known congeners by possessing toxa and an ectosomal tangential arrangement of oxeas.

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The tale of the sea turtle flipper tagging technique, a global environmental impact assessment

Saladin,

Freggi

2024

Wildlife Letters

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Although sea turtle flipper tagging is a tenet field technique generating irreplaceable scientific data worldwide since the inception of sea turtle conservation in 1920s along the Great Barrier Reef, the procedure was reported to trigger outbreaks of sea turtle fibropapillomatosis (FP) in 2018. This global environmental impact assessment performed during 2020–2023 meta‐analyzed three impacts on sea turtles health and conservation of the presence of visible flipper tags: a risk of clinical expression of FP lesions at the tag insertion point, a deterrent effect of the presence of flipper tags on sea turtle fishing, and a risk of entanglement of sea turtles in fishing gears. This essay concluded that the risk of expression of a FP lesion at the flipper tag insertion point is most probably correlated to a direct inoculation of ChHV5 via infected tagging equipment, and that the risk of entanglement in fishing gears can be mitigated by the choice of metallic flipper tags over plastic flipper tags. This essay also strongly recalls the sea turtle flipper tagging technique represents a remedy to knowledge gaps relevant to climate velocity research and can be a deterrent on sea turtle fishing in a frame of strong partnerships with indigenous people, independently of communities' socio‐cultural backgrounds.

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NOAA Prof. Paper NMFS 16: The ecology of deep-sea coral and sponge habitats of the central Aleutian Islands of Alaska

Cited by 22 publications

References 21 publications

A Five-Year, In Situ Growth Study on Shallow-Water Populations of the Gorgonian Octocoral Calcigorgia spiculifera in the Gulf of Alaska

A Five-Year, In Situ Growth Study on Shallow-Water Populations of the Gorgonian Octocoral Calcigorgia spiculifera in the Gulf of Alaska

Two new species of sponges (Porifera, Demospongiae) from the Aleutian Islands, Alaska

The tale of the sea turtle flipper tagging technique, a global environmental impact assessment

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