Form variation and productivity of an intertidal foliose Gigartina species (Rhodophyta) in relation to wave exposure

1990 ◽  
pp. 57-64
Author(s):  
James J. Jackelman ◽  
John J. Bolton
Keyword(s):  
Wave Exposure

Seaweed traits linked to wave exposure determine predator avoidance

2013 ◽  
Vol 483 ◽  
pp. 143-151 ◽  
Author(s):  
JD Long ◽  
L Porturas ◽  
E Jones ◽  
C Kwan ◽  
GC Trussell
Keyword(s):  
Predator Avoidance ◽  
Wave Exposure

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

2020 ◽  
Vol 4 (1) ◽  
pp. 9-13 ◽  
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

scholarly journals New insights into embayed beach rotation: The importance of wave exposure and cross-shore processes

2015 ◽  
Vol 120 (8) ◽  
pp. 1470-1484 ◽  
Author(s):  
M. D. Harley ◽  
I. L. Turner ◽  
A. D. Short
Keyword(s):  
Wave Exposure ◽  
Beach Rotation

Patch dynamics driven by wave exposure in subtidal temperate seaweeds is exacerbated by warming oceans

2022 ◽  
Author(s):  
Y Mulders ◽  
L Mattio ◽  
JC Phillips ◽  
PS Lavery ◽  
GA Kendrick ◽  
...  
Keyword(s):  
Patch Dynamics ◽  
Wave Exposure

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

2021 ◽  
Vol 213 ◽  
pp. 105895
Author(s):  
Taciana Kramer Pinto ◽  
Felipe P.A. Barros ◽  
José Anchieta C.C. Nunes ◽  
Ricardo J. Miranda ◽  
Bruno M.S. Pereira ◽  
...  
Keyword(s):  
Wave Exposure ◽  
Fouling Community ◽  
Rocky Reefs

Caffeine attenuates brain injury but increases mortality induced by high-intensity blast wave exposure

2019 ◽  
Vol 301 ◽  
pp. 90-97 ◽  
Author(s):  
Ya-Lei Ning ◽  
Nan Yang ◽  
Xing Chen ◽  
Hua-Ke Tian ◽  
Zi-Ai Zhao ◽  
...  
Keyword(s):  
Brain Injury ◽  
Blast Wave ◽  
High Intensity ◽  
Wave Exposure

Changes in growth, leaf abscission, and biomass associated with seasonal tropospheric ozone exposures of Populustremuloides clones and seedlings

1996 ◽  
Vol 26 (1) ◽  
pp. 23-37 ◽  
Author(s):  
D.F. Karnosky ◽  
Z.E. Gagnon ◽  
R.E. Dickson ◽  
M.D. Coleman ◽  
J.G. Isebrands ◽  
...  
Keyword(s):  
Tropospheric Ozone ◽  
Root Biomass ◽  
Biomass Accumulation ◽  
Wave Exposure ◽  
Leaf Abscission ◽  
Leaf Biomass ◽  
Diameter Growth ◽  
Rooted Cuttings ◽  
Upper Peninsula ◽  
Square Wave

The effects of single-season tropospheric ozone (O3) exposures on growth, leaf abscission, and biomass of trembling aspen (Populustremuloides Michx.) rooted cuttings and seedlings were studied. Plants were grown in the Upper Peninsula of Michigan in open-top chambers with O3 exposures that ranged from 7 to 92 ppm-h. Depending on the genotype, total seasonal O3 exposure in the range of 50–92 ppm-h had negative impacts on stem, retained leaf, and root biomass accumulation and on diameter growth. Leaf abscission generally increased with increasing O3 exposure and was the principal cause of the decrease in leaf biomass of the O3-treated plants. Considerable genetic variation in O3 responses occurred, as shown by differences in sensitivities among clones and among seedlings. However, the responses to O3 of rooted cuttings and seedlings were similar when seedling means were compared with clonal means for leaf abscission, diameter growth, retained leaf biomass, and root biomass. Comparison of a single square-wave treatment (52 ppm-h) with 70 and 92 ppm-h episodic exposures suggested that the plant response to the square-wave exposure was similar to the response to the highest episodic exposure even though the 92 ppm-h episodic exposure was almost twice the square-wave exposure. Our results are consistent with previous studies that show that P. tremuloides is highly responsive to O3 exposure and this response has a strong genetic component.

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