Role of Some Adjuvants in Enhancing the Efficacy of Herbicides on Forest Species

2018 ◽  
pp. 159-165
Author(s):  
Raj Prasad
Keyword(s):  
Forest Species

The role of fleshy pericarp in seed germination and dispersal under flooded conditions in three wetland forest species

2013 ◽  
Vol 46 ◽  
pp. 10-16 ◽  
Author(s):  
Juan P. Mora ◽  
Cecilia Smith-Ramírez ◽  
Alejandra Zúñiga-Feest
Keyword(s):  
Seed Germination ◽  
Forest Species ◽  
Wetland Forest

The role of visual cues in learning escape behaviour in the little brown skink (Scincella lateralis)

Behaviour ◽  
2014 ◽  
Vol 151 (14) ◽  
pp. 2015-2028 ◽  
Author(s):  
Mark A. Paulissen
Keyword(s):  
Visual Cues ◽  
Small Animal ◽  
Positional Information ◽  
Learning Criterion ◽  
Forest Species ◽  
Escape Behaviour ◽  
Observation Chamber ◽  
Visual Cue ◽  
Scincella Lateralis

Many small animals escape predators by running under an escape retreat such as a rock, log, or pile of leaves. Rapid escape to a retreat would be facilitated if the animal already learned the location of the retreat before it ever had to flee from a predator. One way a small animal might do this is to attend to a prominent ‘local cue’, that is, a visual cue that is part of, or contiguous with, the retreat. I tested the hypothesis that a small lizard commonly known as the little brown skink, Scincella lateralis, can use a local visual cue to learn an escape behaviour. Little brown skinks were presented with two retreats side-by side in an observation chamber. One retreat was backed with a vertical striped cue and the other backed with a horizontal striped cue. Each lizard was induced to run from one end of the observation tank to the opposite end with the two retreats; the retreat that each lizard chose for escape was recorded through a series of 15 trials conducted over three days. Half of the lizards were trained to escape to the vertical cue retreat; half were trained to escape to the horizontal cue retreat. About one-third of little brown skinks met the learning criterion of escaping to the correct retreat in five consecutive trials. However, significantly more of the vertical cue lizards met the learning criterion than did horizontal cue lizards. Also, the vertical cue lizards escaped to the correct retreat significantly more often than expected by chance. Furthermore, even the horizontal cue lizards showed a preference for escaping to the vertical cue retreat. This suggests little brown skinks can use a local visual cue to learn an escape behaviour, but only if it a vertical cue. This may be related to the use of a vertical cue to obtain positional information to locate a retreat or perhaps to the tendency of this forest species to attend to abundant vertical cues in its habitat.

WPŁYW HURAGANU NA STRUKTURĘ I RÓŻNORODNOŚĆ FLORYSTYCZNĄ GRĄDU NISKIEGO W PIERWSZYM ETAPIE REGENERACJI LASU W UROCZYSKU AMERYCZKA W NADLEŚNICTWIE SZUBIN

2020 ◽  
Vol XIII ◽  
pp. 1-1
Author(s):  
Wiesław Cyzman
Keyword(s):  
Floristic Composition ◽  
Forest Species ◽  
Forest District ◽  
Small Forest

The work analyzes changes in the structure and floristic composition in communities in the forest areas that suffered from a hurricane. The analyzes were based on phytosociological studies carried out in the small forest complex "Ameryczka", within and in Szubin Forest District in the years 2017-2019. They showed that after the hurricane, the collective share of phanerophytes and other forest species decreased significantly. The role of non-forest species has increased significantly, especially ruderal and segetal plants from the group of theophytes. Biodiversity has increased at least temporarily.

Spared from poaching and natural predation, wild boars are likely to play the role of dominant forest species in Peninsular Malaysia

2021 ◽  
Vol 496 ◽  
pp. 119458
Author(s):  
Ku Noor Khalidah ◽  
Siti Wahdaniyah ◽  
Norizah Kamarudin ◽  
Alex M. Lechner ◽  
Badrul Azhar
Keyword(s):  
Peninsular Malaysia ◽  
Forest Species ◽  
Wild Boars ◽  
Natural Predation

scholarly journals Forest in Karst Mountain Sinkhole of Southeastern China Provides Refugium for the Preservation of Bryophyte Diversity

2020 ◽  
Vol 89 (4) ◽  
Author(s):  
Xiaofang Li ◽  
Zhaohui Zhang ◽  
Zhihui Wang ◽  
Kuangzheng Shi
Keyword(s):  
Diversity Index ◽  
Soil Parameters ◽  
Available Phosphorus ◽  
Forest Species ◽  
Key Factors ◽  
Karst Rocky Desertification ◽  
Southeastern China ◽  
Rocky Desertification ◽  
Total Potassium

The negative landform of sinkholes provides belowground level refugia for a high diversity of forest species compared to the forests on the surface of surrounding karst plateaus in southeastern China. Bryophyte diversity in sinkhole forests is also likely to be high. In this study, bryophytes of an underground forest sinkhole (UFS), and two forests (Forest Karst Mountain 1; FKM1) and (Forest Karst Mountain 2; FKM2) on the surface of the karst plateau were compared to understand the role of the sinkhole forest in the conservation of bryophyte diversity and the relationships between bryophyte diversity, environmental factors, and soil nutrients. Significantly more bryophyte taxa were recorded from the sinkhole forest (71 taxa, 36 genera, 23 families) than those in the forest on the plateau surface, which was the closest to the sinkhole (FKM1; 29 bryophyte taxa, 16 genera, 12 families), and even fewer bryophytes were found in the forest more distant to the sinkhole (FKM2; 22 taxa, 17 genera, eight families). Twenty-four liverwort taxa were collected from the sinkhole forest, two from the closest surface forest (FKM1) and none from the furthest surface forest (FKM2). Ninety-three percent of the bryophytes in karst mountain sinkhole were not found on surface forest. The diversity index trend was as follows: UFS > FKM1 > FKM2, and the evenness index trend was in the opposite direction as follows: UFS < FKM1 < FKM2. The beta diversity showed that the Jaccard index among the three forests was 0–0.25, reflecting a huge difference between the sinkhole forest and the two surface forests. Canonical correspondence analysis showed that light was the most important factor affecting the distribution of bryophytes in the sinkhole forest, while temperature and humidity were key factors for the distribution of bryophytes in the two surface forests. Further, soil parameters, namely, soil organic carbon, total nitrogen, total phosphorus, total potassium, alkali-hydrolyzed nitrogen, and available phosphorus changed gradually from UFS to FKM1 and to FKM2. The sinkhole forest, located in a landform with the unique negative topography enclosed by cliffs, and with a complex microenvironment, provides a natural refuge for bryophyte species in areas where forests have been negatively impacted by karst rocky desertification.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

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