scholarly journals Biological Plasticity in Penguin Heat-Retention Structures

2011 ◽  
Vol 295 (2) ◽  
pp. 249-256 ◽  
Author(s):  
Daniel B. Thomas ◽  
R. Ewan Fordyce
Keyword(s):  
Biological Plasticity ◽  
Retention Structures

Groins, sand retention, and the future of Southern California’s beaches

Shore & Beach ◽  
2020 ◽  
pp. 14-36
Author(s):  
Gary Griggs ◽  
Kiki Patsch ◽  
Charles Lester ◽  
Ryan Anderson
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Southern California ◽  
Beach Sand ◽  
Submarine Canyons ◽  
Littoral Drift ◽  
Short Supply ◽  
Land Use Decisions ◽  
Coastal Cliffs ◽  
Retention Structures

Beaches form a significant component of the economy, history, and culture of southern California. Yet both the construction of dams and debris basins in coastal watersheds and the armoring of eroding coastal cliffs and bluffs have reduced sand supply. Ultimately, most of this beach sand is permanently lost to the submarine canyons that intercept littoral drift moving along this intensively used shoreline. Each decade the volume of lost sand is enough to build a beach 100 feet wide, 10 feet deep and 20 miles long, or a continuous beach extending from Newport Bay to San Clemente. Sea-level rise will negatively impact the beaches of southern California further, specifically those with back beach barriers such as seawalls, revetments, homes, businesses, highways, or railroads. Over 75% of the beaches in southern California are retained by structures, whether natural or artificial, and groin fields built decades ago have been important for local beach growth and stabilization efforts. While groins have been generally discouraged in recent decades in California, and there are important engineering and environmental considerations involved prior to any groin construction, the potential benefits are quite large for the intensively used beaches and growing population of southern California, particularly in light of predicted sea-level rise and public beach loss. All things considered, in many areas groins or groin fields may well meet the objectives of the California Coastal Act, which governs coastal land-use decisions. There are a number of shoreline areas in southern California where sand is in short supply, beaches are narrow, beach usage is high, and where sand retention structures could be used to widen or stabilize local beaches before sand is funneled offshore by submarine canyons intercepting littoral drift. Stabilizing and widening the beaches would add valuable recreational area, support beach ecology, provide a buffer for back beach infrastructure or development, and slow the impacts of a rising sea level.

Lamarck’s Two Legacies: A 21st-Century Perspective on Use-Disuse and the Inheritance of Acquired Characters

2015 ◽  
Vol 3 (5) ◽  
Author(s):  
Eva Jablonka ◽  
Ehud Lamm
Keyword(s):  
21St Century ◽  
Cultural Evolution ◽  
Historical Context ◽  
Physiological Model ◽  
Future Generations ◽  
Biological Plasticity ◽  
Inheritance Of Acquired Characters ◽  
The Law ◽  
Acquired Characters

<p class="p1"><span class="s1"><strong>Abstract </strong></span>| Lamarck has left many legacies for future generations of biologists<span class="s2"><strong>. </strong></span>His best known legacy was an explicit suggestion, developed in the <em>Philosophie zoologique </em>(PZ), that the effects of use and disuse (acquired characters) can be inherited and can drive species transformation.This suggestion was formulated as two laws, which we refer to as the law of biological plasticity and the law of phenotypic continuity<span class="s2"><strong>. </strong></span>We put these laws in their historical context and distinguish between Lamarck’s key insights and later neo-Lamarckian interpretations of his ideas<span class="s2"><strong>.</strong></span>We argue that Lamarck’s emphasis on the role played by the organization of living beings and his physiological model of reproduction are directly relevant to 21st-century concerns, and illustrate this by discussing intergenerational genomic continuity and cultural evolution.</p>

scholarly journals Evaluation of adaptive capacity of genotypes of spring cereals in arid conditions of the Astrakhan region

2019 ◽  
pp. 25-30
Author(s):  
Valentina Aleksandrovna Fedorova ◽  
Nina Alekseevna Naumova ◽  
Ekaterina Vasylyevna Yachmeneva ◽  
Yulia Pavlovna Tarasenkova
Keyword(s):  
Adaptive Capacity ◽  
Spring Wheat ◽  
Growth And Development ◽  
Spring Barley ◽  
Climatic Conditions ◽  
Grain Yields ◽  
Arid Conditions ◽  
Local Soil ◽  
Spring Cereals ◽  
Biological Plasticity

Objects of research were: spring wheat Saratovskaya 70-st, Cardinal, 3 Curenta, Madam, Nil avocet yr7's, Angarida; spring barley Ratnik-st, Medium 135, grace, Vakula, Brassa; spring oats Showjumping-st, Leo, Bulan, Kuranin. As a result of the study of these varieties of spring crops, the most adapted to local soil and climatic conditions samples were identified. The selected samples were distinguished by high biological plasticity, growth and development rates, maximum use of moisture, as well as the ability to form high grain yields.

scholarly journals Effect of small water retention structures on diffusive CO2 and CH4 emissions along a highly impounded river

Inland Waters ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 449-460 ◽  
Author(s):  
Lluís Gómez-Gener ◽  
Marina Gubau ◽  
Daniel von Schiller ◽  
Rafael Marcé ◽  
Biel Obrador
Keyword(s):  
Water Retention ◽  
Ch4 Emissions ◽  
Small Water ◽  
Retention Structures

Coupling check dams with large wood retention structures in clean water

2019 ◽  
Vol 20 (3) ◽  
pp. 619-634 ◽  
Author(s):  
Sabrina Meninno ◽  
Ricardo Birjukovs Canelas ◽  
António Heleno Cardoso
Keyword(s):  
Clean Water ◽  
Large Wood ◽  
Check Dams ◽  
Retention Structures

Managing Knowledge Retention Structures

2010 ◽  
pp. 103-129
Author(s):  
Paddy O’Toole
Keyword(s):  
Knowledge Retention ◽  
Retention Structures

Occurrence and relative abundance of mosquitoes in stormwater retention facilities in North Carolina, USA

2006 ◽  
Vol 54 (6-7) ◽  
pp. 315-321 ◽  
Author(s):  
W.F. Hunt ◽  
C.S. Apperson ◽  
S.G. Kennedy ◽  
B.A. Harrison ◽  
W.G. Lord
Keyword(s):  
North Carolina ◽  
Relative Abundance ◽  
Seasonal Changes ◽  
Stormwater Management ◽  
Biological Diversity ◽  
Mosquito Species ◽  
Structural Complexity ◽  
Different Types ◽  
Retention Structures ◽  
Stormwater Retention

Throughout the 2004 mosquito season, 52 stormwater retention facilities were sampled to characterize the seasonal occurrence and relative abundance of mosquito species in relation to the structural complexity and biological diversity of the facilities. The three different types of facilities included standard wet ponds (n=20), innovative ponds (n=14), and wetland ponds (n=18). All retention structures were sampled at the beginning, middle and end of the mosquito season so that seasonal changes in mosquito production could be characterized. Overall samplings, mosquitoes were collected from 34% of the retention structures. Fourteen species representing 7 genera were collected, but only 5 species (Culex erraticus, Cx. territans, Anophelesquadrimaculatus, An. punctipennis and Uranotaenia sapphirina) were commonly collected in all three types of stormwater management facilities. In general, the seasonal prevalence and relative abundance of mosquito species did not vary among three types of retention structures. A significant association (P&lt;0.01) between the presence of mosquito larvae or pupae and the absence of mosquitofish was found for innovative and wetland stormwater retention facilities but not for standard retention facilities (P&gt;0.05).

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