Shipwrecks fouling community: Similarities with natural rocky reefs at different distances and wave exposure regimes

Here we studied the activity budgets of nine common reef fish in the oceanic archipelago of Fernando de Noronha, off north-east Brazil. Species were variable in their behaviour between different sites and similarities in their activity budgets were not necessarily associated with their trophic group. For four species we investigated the relationship of their activity budgets to wave exposure and substratum composition. Staying close to the substratum was positively correlated to wave exposure for most species and foraging was negatively correlated to exposure for two species. By behaving this way, these fish may save energy by avoiding swimming in higher water flux. In contrast to relationships with wave exposure, the responses to substratum composition were species specific. Our results highlight that the activity budgets of fish living in oceanic rocky reefs can be variable and influenced by the local and temporal variation in environmental variables.

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The role of wave-exposure and human impacts in regulating the distribution of alternative habitats on NW Mediterranean rocky reefs

Estuarine Coastal and Shelf Science ◽

10.1016/j.ecss.2016.02.013 ◽

2018 ◽

Vol 201 ◽

pp. 114-122 ◽

Cited By ~ 10

Author(s):

Fabio Bulleri ◽

Andrea Cucco ◽

Martina Dal Bello ◽

Elena Maggi ◽

Chiara Ravaglioli ◽

...

Keyword(s):

Human Impacts ◽

Wave Exposure ◽

Rocky Reefs ◽

Nw Mediterranean

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Seaweed traits linked to wave exposure determine predator avoidance

Marine Ecology Progress Series ◽

10.3354/meps10294 ◽

2013 ◽

Vol 483 ◽

pp. 143-151 ◽

Cited By ~ 5

Author(s):

JD Long ◽

L Porturas ◽

E Jones ◽

C Kwan ◽

GC Trussell

Keyword(s):

Predator Avoidance ◽

Wave Exposure

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Faculty Opinions recommendation of Intensive fishing of marine consumers causes a dramatic shift in the benthic habitat on temperate rocky reefs.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.715297801.790752807 ◽

2012 ◽

Author(s):

John Pandolfi ◽

Ruth Reef

Keyword(s):

Benthic Habitat ◽

Rocky Reefs ◽

Dramatic Shift ◽

Intensive Fishing

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Pengaruh Variasi Waktu Paparan Gelombang Ultrasonik dalam Mengurangi Jumlah Bakteri coliform pada Sampel Air Sungai Kahayan

Risalah Fisika ◽

10.35895/rf.v4i1.168 ◽

2020 ◽

Vol 4 (1) ◽

pp. 9-13 ◽

Cited By ~ 1

Author(s):

Neny Kurniawati, Kerelius, Sunariyati ◽

Luqman Hakim, Dyah Ayu Pramoda Wardani, Widya Krestina ◽

Dwi Tyas Setiawan, Ferry Purwanto, Diah K. Fatmala

Keyword(s):

Water Treatment ◽

River Water ◽

Ultrasonic Wave ◽

Exposure Time ◽

Water Samples ◽

Sampling Technique ◽

Wave Exposure ◽

Test Results ◽

Time Data ◽

Grab Sampling

Abstrak – Penelitian ini bertujuan untuk mengkaji pengaruh waktu paparan gelombang ultrasonik terhadap pengurangan jumlah koloni bakteri coliform pada sampel air sungai Kahayan. Pengambilan sampel air sungai dilakukan dengan teknik Grab Sampling menggunakan alat Kemmerer Sampler. Sampel air yang didapatkan diberikan paparan gelombang ultrasonik secara langsung, tanpa merubah kondisi lingkungan awal. Waktu paparan divariasikan pada 1 jam, 2 jam, 3 jam, 4 jam, dan 5 jam dengan frekuensi 40 kHz untuk memperoleh data waktu optimum. Uji coliform dilakukan dengan metode MPN, dengan tahapan uji pendugaan, uji penegasan, dan perhitungan koloni. Hasil uji MPN 24 jam setelah paparan menunjukkan bahwa penggunaan ultrasonik sebagai antibateri dapat optimum ketika diberikan paparan dengan waktu 3 jam, dengan efisiensi 96%. Kata kunci: antibakteri, coliform, ultrasonik, water treatment, sungai Kahayan Abstract – This study aims to examine the effect of ultrasonic wave exposure time on reducing the number of coliform bacterial colonies in the Kahayan river water samples. River water sampling is done using the Grab Sampling technique using the Kemmerer Sampler tool. The water samples obtained were given direct ultrasonic wave exposure, without changing the initial environmental conditions. The exposure time is varied in 1 hour, 2 hours, 3 hours, 4 hours and 5 hours with a frequency of 40 kHz to obtain optimum time data. Coliform test was carried out by the MPN method, with the stages of the estimation test, affirmation test, and colony calculation. The MPN test results 24 hours after exposure showed that the use of ultrasonic as an antibody can be optimum when given exposure with a time of 3 hours, with an efficiency of 96%.Keywords : antibakterial, coliform, ultrasonic, water treatment, Kahayan river

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