Quantifying the ecological impact of invasive tunicates to shallow coastal water systems

Arias‐Ortiz, Ariane; Nelson, Edward William; Ayvazian, Suzanne G.; Carman, Mary R.; Chintala, Marnita M.; Grabbert, Sinead; Grunden, David W.

doi:10.3391/mbi.2016.7.1.05

Cited by 11 publications

(4 citation statements)

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“…At the 5 th IISSC, much of the work still examined the ecological impacts of invasive ascidians. But by this time, the types of questions had either shifted to be more narrowly focused (Koplovitz et al 2016), or had expanded to be more broadly applicable (Colarusso et al 2016). A good deal of work was also focused on describing the distribution patterns of invasive ascidians (e.g., McKenzie et al 2016a).…”

mentioning

confidence: 99%

Biodiversity of ascidians in a heterogeneous bay from southeastern Brazil

Granthom-Costa¹,

Ferreira²,

Dias³

2016

MBI

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mentioning

confidence: 99%

Biodiversity of ascidians in a heterogeneous bay from southeastern Brazil

Granthom-Costa¹,

Ferreira²,

Dias³

2016

MBI

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“…2 ). Lagoon Pond covers 544 acres with a mean depth of 3 m, and Farm Pond covers 33 acres, is tidally restricted, and has a mean depth of 1.5 m. Both ponds have a tidal range of <1 m. The ponds are located in the town of Oak Bluffs, separated by about 4 km of land, and are the sites of ongoing research on invasive species ( Carman, Grunden & Ewart, 2014 ; Carman et al, 2016 ; Colarusso et al, 2016 ). Gonionemus was first observed in Farm Pond in 2007 ( Govindarajan & Carman, 2016 ) and has not been observed in Lagoon Pond.…”

Section: Methodsmentioning

confidence: 99%

Species–specific crab predation on the hydrozoan clinging jellyfish Gonionemus sp. (Cnidaria, Hydrozoa), subsequent crab mortality, and possible ecological consequences

Carman

Grunden²,

Govindarajan

2017

PeerJ

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Here we report a unique trophic interaction between the cryptogenic and sometimes highly toxic hydrozoan clinging jellyfish Gonionemus sp. and the spider crab Libinia dubia. We assessed species–specific predation on the Gonionemus medusae by crabs found in eelgrass meadows in Massachusetts, USA. The native spider crab species L. dubia consumed Gonionemus medusae, often enthusiastically, but the invasive green crab Carcinus maenus avoided consumption in all trials. One out of two blue crabs (Callinectes sapidus) also consumed Gonionemus, but this species was too rare in our study system to evaluate further. Libinia crabs could consume up to 30 jellyfish, which was the maximum jellyfish density treatment in our experiments, over a 24-hour period. Gonionemus consumption was associated with Libinia mortality. Spider crab mortality increased with Gonionemus consumption, and 100% of spider crabs tested died within 24 h of consuming jellyfish in our maximum jellyfish density containers. As the numbers of Gonionemus medusae used in our experiments likely underestimate the number of medusae that could be encountered by spider crabs over a 24-hour period in the field, we expect that Gonionemus may be having a negative effect on natural Libinia populations. Furthermore, given that Libinia overlaps in habitat and resource use with Carcinus, which avoids Gonionemus consumption, Carcinus populations could be indirectly benefiting from this unusual crab–jellyfish trophic relationship.

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“…A hexacopter model, such as the DJI ® Matrice 600, not only provides longer flight times of approximately 35 min, but also comes with a higher payload capacity. The latter would allow for the mount of more advanced camera systems, additional loggers (e.g., water quality measurement systems [36], temperature profiling systems [38] or water samplers [33,34,[58][59][60][61]), and a line spool, which would eliminate the need for lowering the UAV flight altitude in order to submerge the camera-logger cluster.…”

Section: Future Workmentioning

confidence: 99%

UAV-Based Subsurface Data Collection Using a Low-Tech Ground-Truthing Payload System Enhances Shallow-Water Monitoring

Thomasberger,

Nielsen

2023

Drones

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Unoccupied Aerial Vehicles (UAVs) are a widely applied tool used to monitor shallow water habitats. A recurrent issue when conducting UAV-based monitoring of submerged habitats is the collection of ground-truthing data needed as training and validation samples for the classification of aerial imagery, as well as for the identification of ecologically relevant information such as the vegetation depth limit. To address these limitations, a payload system was developed to collect subsurface data in the form of videos and depth measurements. In a 7 ha large study area, 136 point observations were collected and subsequently used to (1) train and validate the object-based classification of aerial imagery, (2) create a class distribution map based on the interpolation of point observations, (3) identify additional ecological relevant information and (4) create a bathymetry map of the study area. The classification based on ground-truthing samples achieved an overall accuracy of 98% and agreed to 84% with the class distribution map based on point interpolation. Additional ecologically relevant information, such as the vegetation depth limit, was recorded, and a bathymetry map of the study site was created. The findings of this study show that UAV-based shallow-water monitoring can be improved by applying the proposed tool.

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Quantifying the ecological impact of invasive tunicates to shallow coastal water systems

Cited by 11 publications

References 0 publications

Biodiversity of ascidians in a heterogeneous bay from southeastern Brazil

Biodiversity of ascidians in a heterogeneous bay from southeastern Brazil

Species–specific crab predation on the hydrozoan clinging jellyfish Gonionemus sp. (Cnidaria, Hydrozoa), subsequent crab mortality, and possible ecological consequences

UAV-Based Subsurface Data Collection Using a Low-Tech Ground-Truthing Payload System Enhances Shallow-Water Monitoring

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