Showing papers on "Heron published in 2021"
TL;DR: In this paper, the authors describe the use of human language to represent the non-human in the story "A White Heron" (1886) by intersecting the perspectives of posthumanism, object-oriented ontology, and new materialisms, with that of literary soundscapes.
Abstract: ABSTRACT This article aims to advance the research on US, 19th-century regionalist writer Sarah Orne Jewett’s position on the nonhuman in her most famous story, ‘A White Heron’ (1886), by intersecting the perspectives of posthumanism, object-oriented ontology, and the new materialisms, with that of literary soundscapes. Moving from previous assessments of Jewett’s participation in the environmentalism emerging in the US in the second half of the 19th century, it tries to answer the ingrained critique of the aporia inherent in the animal question – i.e. the use of human language to represent the nonhuman – through an accurate examination of the silences and vocalisations depicted in the story. Through her soundscapes, Jewett signifies her intentional and ethical use of the literary device of anthropomorphism, and an intuited, radical take on the animal question.
5 citations
TL;DR: The first systematic, large-scale river survey for this species in the states of Arunachal Pradesh and Assam in north-east India with the aim of establishing its evidence-based distribution and assessing the severity of threats on the river systems in the region is reported in this article.
Abstract: The White-bellied Heron Ardea insignis is currently known to be restricted to Bhutan, Myanmar, and north-east India. This ‘Critically Endangered’ species is under threat from the ever-changing river systems, primarily due to anthropogenic pressures including the large number of proposed hydropower projects. We report results of the first systematic, large-scale river survey for this species in the states of Arunachal Pradesh and Assam in north-east India with the aim of establishing its evidence-based distribution and assessing the severity of threats on the river systems in the region. We conducted river surveys along all seven major river basins in Arunachal Pradesh (October 2017–March 2018) and one in Assam (January 2019) along with 200 key informant surveys from 23 localities across the region. We encountered the White-bellied Heron six times in only three of 81 sites surveyed. Three interviewees reported observing the herons in three new localities, but we did not have a direct observation of the birds in any new sites. From field observations during the river surveys as well as the interview results, we found that certain fishing methods, garbage, and sand/gravel mining could be potential reasons for restricted occurrence of the White-bellied Heron in the region. Hunting is also a threat that prevails across the region. Our study calls for governmental commitment for the protection of the species and its vulnerable ecosystem and focussed research on understanding the anthropogenic impacts on the heron.
4 citations
TL;DR: In this article, the authors show that the practical strategies, philosophies and conceptualisations about the nuances and dynamics of the role of ICT in internationalisation of HE presented in each of the chapters, designed and discussed before the pandemic, can now be used as a response model and a new theoretical framework as we recover HE internationalisation after the pandeline.
Abstract: exception. They show us that the practical strategies, philosophies and conceptualisations about the nuances and dynamics of the role of ICT in internationalisation of HE presented in each of the chapters, designed and discussed before the pandemic, can now be used as a response model and a new theoretical framework as we recover HE internationalisation after the pandemic. The book will thus be of great value not only to those who are interested in the practical aspects of ICT implementation in internationalisation but also those who need a framework for conceptualising HE education at a time of instability, attempting to interrogate the more wicked internationalisation questions about, for instance, systems and people equality that always become more pronounced at times of educational crises.
2 citations
TL;DR: An array of predators that consume juvenile salmon (Oncorhynchus spp. Suckley, 1861) may account for the poor returns of adult salmon to the Salish Sea, but the Pacific great blue heron (Ard...
Abstract: An array of predators that consume juvenile salmon (genus Oncorhynchus Suckley, 1861) may account for the poor returns of adult salmon to the Salish Sea. However, the Pacific Great Blue Heron (Arde...
2 citations
TL;DR: In this paper, surface and subsurface sampling were conducted to find nesting debris generated by a great blue heron (Ardea herodias), a bird with "semi-altricial" young.
Abstract: Reports on nesting debris generated by great blue heron (Ardea herodias), arboreal nesting birds with ‘semi-altricial’ young, are limited. In this study, surface and subsurface sampling were conduc...
2 citations
01 Mar 2021
TL;DR: In this paper, the authors describe piracy attempts of a Black-collared Hawk Busarellus nigricollis on a Cocoi Heron Ardea cocoi, and the behavior displayed by the latter to evade prey theft.
Abstract: Kleptoparasitism or piracy is the stealing of already obtained prey by one animal from another. Bird robbers are distributed across several orders worldwide. Hawks are accomplished robbers and several species practice this foraging behavior. We describe piracy attempts of a Black-collared Hawk Busarellus nigricollis on a Cocoi Heron Ardea cocoi, and the behavior displayed by the latter to evade prey theft. The heron caught a pike characin and mandibulated the prey, while a hawk approached from behind flying low. When the hawk was close, the heron plunged its head in the water and remained so while the hawk maneuvered for another robbery try. The hawk attempted to steal the fish from the heron about six to seven times with the same result. Piracy by Black-collared Hawk appears unrecorded in the scientific literature, and the Cocoi Heron plunge seems to be a novel behavior displayed by a heron harassed by a prey robber. The series of unsuccessful piracy attempts by the Black-collared Hawk likely incurred in high energy cost with no profit, which could indicate that piracy by this hawk is rare, or that the hawk failed to perceive that the head-plunging by the Cocoi Heron is an effective way to prevent prey robbing.
1 citations
01 Jan 2021
TL;DR: A White Heron has been read as a coming-of-age tale and an eco-feminist text, but as discussed by the authors argues that the textual intervention is in the field of literary animal studies.
Abstract: Sarah Orne Jewett’s A White Heron has been read as a coming-of-age tale and an eco-feminist text, but I argue that the textual intervention is in the field of literary animal studies. Jewett’s text focuses primarily on the animal encounters that Sylvia participates in throughout the short story, but by including a young hunter naturalist, also makes a larger statement about the external, rapidly industrializing world. The young hunter has killed and plans to kill many more birds over his life time and is specifically searching for the white heron. Sylvia, only nine years old, originally left her life in the city to come live with her grandmother in the forest explicitly because of her inability to peaceably live with other people. The narrator directly mentions a “red-faced” boy who used to scare her. Sylvia’s gradual fondness for the young hunter naturalist eventually leads her to climb a tall tree in search of the white heron. Despite his promise of money and the unspoken potential for love, Sylvia denies the information to the young man. Though obviously hopeful as an environmental text for how Sylvia denies the man and hunter access to the rare bird, it actually constructs a particularly positivist view into a cramped, modernizing world where the first traces of the Anthropocene emerged in the twentieth century. This article analyzes Sylvia’s many animal encounters, her climb to find the white heron, the deaths of the birds at the hands of the young hunter, and the overall intervention made by Jewett that despite human damage to landscape, lifestyle, and conceptions of wilderness, the animal will survive and reproduce.
1 citations
TL;DR: In this paper, the authors explored the relationship between the relative abundance of the WBH and prey biomass catch per unit effort within four foraging river microhabitats (pool, pond, riffle and run).
Abstract: White-bellied Heron Ardea insignis (WBH) is critically endangered, but we lack data on many aspects of its basic ecology and threats to the species are not clearly understood. The goal of this study was to analyse WBH foraging microhabitat selection, foraging behaviour, and prey preferences in two river basins (Punatsangchhu and Mangdechhu) in Bhutan which are likely home to one of the largest remaining populations of WBH. We also explored the relationship between the relative abundance of the WBH and prey biomass catch per unit effort within four foraging river microhabitats (pool, pond, riffle and run). Prey species were sampled in 13 different 100-m thalweg lengths of the rivers using cast nets and electrofishing gear. Riffles and pools were the most commonly used microhabitats; relative abundance was the highest in riffles. The relative abundance of WBH and prey biomass catch per unit effort (CPUE) also showed a weak but significant positive correlation (rs = 0.22). The highest biomass CPUE was observed in riffles while the lowest was found in the ponds. From the 97 prey items caught by the WBH, 95% of the prey were fish. The WBH mainly exploited three genera of fish (Garra, Salmo, and Schizothorax) of which Schizothorax (64%) was the most frequently consumed. This study provides evidence in support of further protection of critical riverine habitat and fish resources for this heron. Regular monitoring of sand and gravel mining, curbing illegal fishing, habitat restoration/mitigation, and developing sustainable alternatives for local people should be urgently implemented by the government and other relevant agencies. Further study is also required for understanding the seasonal variation and abundance of its prey species in their prime habitats along the Punatsangchhu and Mangdechhu basins.
1 citations
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TL;DR: In this paper, it was shown that there is only one pair of amicable Heron triangles, where the perimeter of one Heron triangle is the area of the other one.
Abstract: A Heron triangle is a triangle whose side lengths and area are integers. Two Heron triangles are amicable if the perimeter of one is the area of the other. We show, using elementary techniques, that there is only one pair of amicable Heron triangles.
TL;DR: In this article, the authors observed and photographed an adult Great Blue Heron (Ardea herodias) foraging by bill-vibrating at a large pond in Dead Horse Ranch State Park, near Cottonwood, Arizona.
Abstract: The more than 60 species in the family Ardeidae (herons, egrets, and bitterns) are known to be very creative at catching prey. Kushlan (1978) describes a total of 38 feeding behaviors for this family. Each species uses several feeding methods, but only 6 species, or about 10% of the family, are known to attract fish by vibrating their bills in water, a technique first described by Buckley and Buckley (1968). This makes bill-vibrating one of the least common feeding tactics in Ardeidae. On 10 May 2019, I observed and photographed an adult Great Blue Heron (Ardea herodias) foraging by bill-vibrating at a large pond in Dead Horse Ranch State Park, near Cottonwood, Arizona. Bill-vibrating has not previously been reported in this species.
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TL;DR: In this paper, the authors emulate a cloud environment with Minikube and see how the API server works in Heron scheduler and show how it runs inside the cloud environment.
Abstract: HealthManager and API server were introduced to Heron recently. HealthManager is based on Dhalion, which targets self-tuning, self-stabilizing, and self-healing. It first fetches the metrics from MetricsCache Manager, next identifies the abnormalities, then diagnoses the cause, and finally tries to resolve them. The API server is the service mode for Heron scheduler. It runs inside the cloud, and Heron CLI delegates the command to the API server. We will emulate a cloud environment with Minikube and see how the API server works.
TL;DR: This paper used the iconic spoken word poem, "The Revolution Will Not be Televised" by Gil Scott-Heron to chart a series of reflections on my childhood engagement of the piece for high speech tournaments.
Abstract: I use the iconic spoken word poem, “The Revolution Will Not be Televised” by Gil Scott-Heron to chart a series of reflections on my childhood engagement of the piece for high speech tournaments. Th...
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TL;DR: In this paper, the authors showed that there are infinitely many Heron triangles with two rational medians, an infinite subset of which are associated with rational points on an elliptic curve E(Q) with the Mordell-Weil group Z × Z/2Z.
Abstract: Triangles with integer length sides and integer area are known as Heron triangles. Taking rescaling freedom into account, one can apply the same name when all sides and the area are rational numbers. A perfect triangle is a Heron triangle with all three medians being rational, and it is a longstanding conjecture that no such triangle exists. However, Buchholz and Rathbun showed that there are infinitely many Heron triangles with two rational medians, an infinite subset of which are associated with rational points on an elliptic curve E(Q) with Mordell-Weil group Z × Z/2Z, and they observed a connection with a pair of Somos-5 sequences. Here we make the latter connection more precise by providing explicit formulae for the integer side lengths, the two rational medians, and the area in this infinite family of Heron triangles. The proof uses a combined approach to Somos-5 sequences and associated Quispel-Roberts-Thompson (QRT) maps in the plane, from several different viewpoints: complex analysis, real dynamics, and reduction modulo a prime.
TL;DR: Vigilant breeding crows, despite their ability to depredate heron nests, may be more beneficial to herons as they are known to mob and distract heron predators, but a full cost-benefit analysis needs to be undertaken.
01 Jan 2021
TL;DR: In this article, the authors investigated the pronic heron mean labeling on special cases of generalized Petersen graph P(n,k) and described an algorithm to label the vertices for pronic Heron Mean Labeling for disconnected graphs.
Abstract: A graph labeling is an assignment of integers to the vertices or edges or both subject to certain conditions. In this paper for a graph G(V,E) each of the vertices v ∈V (G) are assigned by pronic numbers. In this paper, we investigate the pronic heron mean labeling on special cases of generalized Petersen graph P(n,k). Also we described an algorithm to label the vertices for the pronic heron mean labeling for certain disconnected graphs.