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Submitted Date and Time: 2015-08-18 15:12:11

Title: Wetland habitat associations of imperiled Pecos pupfish Cyprinodon pecosensis in a brackish ciénega

Authors:
Hoagstrom, Christopher 1
Caldwell, Colleen 2
Peterson, Damon 2

Affiliations:
1. Weber State University Department of Zoology
2. New Mexico Cooperative Fish & Wildlife Research Unit

Abstract:
Ciénegas of semi-desert grasslands are disappearing from the American Southwest, but were once common in the Pecos River valley. Pecos pupfish Cyprinodon pecosensis was endemic to these wetlands, but now persists only in remnant habitats. Habitat fragmentation can create divergent morphotypes among isolated habitats, whereas habitat connectivity appears to allow gene flow, maintaining average morphotypes. We studied habitat association by Pecos pupfish in a connected, diverse brackish ciénega. The U.S. Fish and Wildlife Service National Wetlands Inventory Program mapped habitat types. Over two years, we monitored 52 locations representing six habitat types quarterly. Pupfish occurred in > 60% of collections from permanently watered locations and > 35% of collections from intermittent locations (when watered). It was the most abundant and widespread fish species, but in intermittent sites it had greater differential in frequency of occurrence and dominance (i.e. percent abundance) over other species. Dominance was also positively correlated with specific conductance. Distribution of pupfish among available habitats was even in June, but biased toward vegetated habitats in December. Smaller pupfish (< 20 mm SL) predominated in shallow, salty, intermittent flats and deeper, fresher, permanent ponds with thick submergent vegetation. In contrast, larger pupfish (> 20 mm SL) predominated in shallow, fresher semi-permanent and seasonally flooded marshes. Pecos pupfish is a tolerant, generalist with a dynamic distribution when diverse habitats are available and variable. Habitat connectivity may not only increase gene flow, but also allow populations to maximize seasonal reproduction, recruitment, and survival.

Resumen:
Entra texto de resumen en español

Presentation Type: Oral
Session: Contributed
Student Award: No

Comments:




Submitted Date and Time: 2015-08-13 14:14:29

Title: FISHES OF THE NATURAL PROTECTED AREAS: NATURAL MONUMENT CERRO DE LA SILLA AND NATURAL PROTECTED AREA STATE LEVEL SIERRA CERRO DE LA SILLA, NUEVO LEÓN, MÉXICO

Authors:
Lozano Vilano, Ma. de Lourdes 1
Garcia Ramirez, Ma. Elena 1
Contreras-Lozano, Jorge A. 1
Contreras-Balderas, Armando J. 1

Affiliations:
1. Universidad Autonoma de Nuevo Leon. Laboratorio de Ictiologia
2. Universidad Autonoma de Nuevo Leon. Laboratorio de Ictiologia
3. Universidad Autonoma de Nuevo Leon. Laboratorio de Ictiologia
4. Universidad Autonoma de Nuevo Leon. Laboratorio de Ictiologia

Abstract:
The State of Nuevo León is located at NE of México, where the water is a limited resource for the plants and animals, mainly fishes and human. Is a semidesertic area with poorly rains that affects the equilibrium of the natural ecosystems. In the Natural Monument Cerro de la Silla, are a few springs and streams, and in the Natural Protected area State level Sierra Cerro de la Silla, too and also have one river. Our hypothesis is that all river, streams and springs are in good ecological conditions. The present study was conducted in the two areas, to know the ichtyofauna, and to make an analysis zoogeography and ecological and the possible presence of exotic fishes. During 2011-2012, were realized samples each month, include 10 localities. We collected 3758 specimens, that corresponding to 21 species, 18 genus in nine families. For the natural distribution, 14 are native and seven exotic or invasive species. Zoogeographical, 10 Neotropical, 10 Nearctic, and one exotic. Ecologically 11 are primaries, eight secondary and two peripheral. According to the NOM-059-SEMARNAT-2010, five species are threatened and one endangered. Is remarkable that 33% of the species are exotic or invaders, and in some localities is possible the native fishes disappear in the future, mainly for lost water, little rain or extraction for human consume, also the human activities is cause of pollution, and the equilibrium of the ecosystem and biodiversity are affected in great scale.

Resumen:
El estado de Nuevo León está ubicado en el noreste de México, es una área semidesértica con escasas lluvias, afectando así sus ecosistemas. Dentro del Monumento Natural Cerro de la Silla se encuentran varios arroyos y pequeños manantiales. El presente estudio fue realizado en las áreas naturales protegidas: Monumento Natural Cerro de la Silla y Sierra Cerro de la Silla en Nuevo León, México con el propósito de conocer la ictiofauna así como realizar un análisis zoogeográfico y ecológico. Se realizaron muestreos mensuales durante el periodo 2011-2012, en 10 localidades, mediante el método de colecta captura por unidad de esfuerzo (CAPUE); se utilizaron chinchorros de 2 y 3 m de largo y 1,8 m de alto, con 1/16’ de luz de malla, redes de cuchara y equipo de electropesca. Se colectaron 3758 ejemplares, repartidos en 21 especies, 18 géneros y 9 familias. Por su distribución natural 14 son nativas y 7 exóticas. Por su origen zoogeográfico, 10 son neotropicales, 10 neárticas y una exótica de origen etiópica; por su afinidad ecológica 11 son primarias, 8 secundarias y 2 periféricas; dentro de la NOM-059-SEMARNAT-2010, se encuentran 5 amenazadas y una en peligro de extinción. Es importante destacar que el 33% de especies presentes son exóticas o invasoras, además, algunas de las localidades estudiadas los peces están a punto de desaparecer, debido primeramente a la escases del agua ya sea por la falta de lluvias o por extracción, o por contaminación provocada por actividades antropogénicas, lo que afecta el equilibro del ecosistema y la biodiversidad nativa presente.

Presentation Type: Poster
Session: Contributed
Student Award: No

Comments:




Submitted Date and Time: 2015-08-10 17:42:18

Title:

Authors:
Kesner, Brian 1

Affiliations:
1. Marsh and Associates, LLC

Abstract:
Enter abstract text (English);

Resumen:
Entra texto de resumen en español

Presentation Type:
Session:
Student Award:

Comments:




Submitted Date and Time: 2015-08-10 11:44:37

Title:

Authors:
De La Maza, Mauricio 1
Lozano-Vilano, Ma. de Lourdes 1
Contreras-Balderas, Armando J. 1
Garcia-Ramirez, Ma. Elena 1

Affiliations:
1. PRONATURA NORESTE, A. C.
2. UNIVERSIDAD AUTONOMA DE NUEVO LEON. LABORATORIO DE ICTIOLOGIA
3. UNIVERSIDAD AUTONOMA DE NUEVO LEON. LABORATORIO DE ICTIOLOGIA
4. UNIVERSIDAD AUTONOMA DE NUEVO LEON. LABORATORIO DE ICTIOLOGIA

Abstract:
The state of a river ecological health can be assessed through the analysis of its biological, physicochemical and habitat components, as well as the presence of invasive species. The Rio Grande (Río Bravo) is crucial for the economic and social welfare of the extensive border region that exists between México and the United States. Among the sites that have being identified as priority conservation areas by the Commission for Environmental Cooperation (CEC) are the San Antonio and San Carlos creeks, which are located within the limits of APFF Cañón de Santa Elena in Mexico. Originally, our hypothesis for this study considered that both systems were in fair ecological conditions. In order to determine the ecological status of both creeks, we designed an Index of Biological Integrity (IBI) for fish, and determined baselines for the metrics used, as well as other ecological parameters. Our results indicate 1) presence of moderate levels of fecal pollution probably coming from livestock and domestic waste; 2) creek sections with moderate to high eutrophication mainly from rural communities and agricultural runoff and irrigation returns; 3) presence of residual traces of heavy metals, which possibly originated from some of the abandoned mines in the region; 4) presence of 3 native species in both systems; and 5) invasion by the exotic species Fundulus zebrinus Fish and water samples were taken from 10 sites in both creeks; an extra control site was sampled from a nearby Arroyo El Chapo. In order to construct the IBI we considered the three native species identified, as well as 3 “potential” and one exotic species for both sites. IBI scores for the various sites indicate different degrees of ecological impact. On a scale of 0 to 100, the Arroyo San Carlos scored 22, San Antonio 18, and their confluence 66; while nearby Arroyo El Chapo, located in the same hydrological sub-region scored 65. We recommend: 1) that livestock should be excluded from the riparian zones, 2) the treatment of waste water from small rural communities and 3) the construction of oxidation ponds to treat irrigation returns that cause eutrophication. Finally we recommend starting a restoration program, in order to restore habitat and species at specific sites, as well as a program for the control and/or eradication of exotic species.



Resumen:
La salud ecológica de un río se mide por la estabilidad y el equilibrio de sus componentes biológicos, físico-químicos y de hábitat, además de la ausencia de especies exóticas. El Río Bravo es determinante para el bienestar social y económico de una extensa región fronteriza entre México y Estados Unidos. Entre los sitios prioritarios para la conservación que ha identificado la Comisión para la Cooperación Ambiental en esta área se encuentra la cuenca de los arroyos San Antonio y San Carlos, dentro del Área de Protección de Flora y Fauna de Cañón de Santa Elena. La hipótesis es considerar que estos se encuentran en una buena condición ecológica bajo el criterio de los peces. El presente trabajo busca establecer líneas base y desarrollar índices bióticos de integridad (IBI) de acuerdo a éste grupo taxonómico. Se encontró contaminación producida por deshechos fecales ganaderos y domésticos así como por retornos agrícolas, encontrándose trazas de posible residualidad de minas abandonadas. Se analizaron 10 localidades repartidas en ambos arroyos, y un sitio más en una cuenca aledaña como testigo. Se reporta la presencia de 3 especies nativas en la cuenca, y 3 potenciales, considerando ambos sistemas más una exótica. Los resultados del IBI de las localidades, indican diferentes grados de deterioro. En una escala de 0 al 100, el arroyo San Carlos obtuvo 22, San Antonio 18, y la confluencia de ambos 66; mientras que la localidad testigo el Arroyo El Chapo, dentro de la misma subregión hidrológica obtuvo 65. Se recomienda que se excluya el ganado de las zonas riparias, se traten las aguas crudas provenientes de las pequeñas comunidades, así como los retornos agrícolas que causan eutrofización. También se recomienda iniciar un programa de restauración del hábitat y de especies, además del control y/o eliminación de la especie exótica.

Presentation Type: Poster
Session: Contributed
Student Award: No

Comments:




Submitted Date and Time: 2015-07-27 14:06:37

Title: Jim Deacon: Reflections on a Life Well Spent

Authors:
Williams, Jack 1

Affiliations:
1. Trout Unlimited

Abstract:
Jim Deacon was passionate about desert fishes and the Desert Fishes Council. Jim received his Ph.D. from the University of Kansas in 1960 and joined the biological science faculty at the University of Nevada, Las Vegas that same year. His career would be marked by key victories in the war for survival of the Devils Hole pupfish, Ash Meadows, Pahrump Valley, the Virgin River, and the many other places where Jim and his students practiced fisheries science and conservation. Despite some impressive victories, Jim’s concerns always were broad based and reflective of a larger struggle: how humans can live sustainably in the desert without destroying nature and themselves. Jim fought hard on these issues, long after he became confined to a wheelchair and long after his retirement as an Emeritus Professor. He provided badly needed leadership at a time when society seemed more concerned with bright lights and fountains along the Las Vegas Strip than with ethics and sustainability. He was a force for biodiversity conservation and received the first annual E.O. Wilson Award for Outstanding Science in Biodiversity Conservation in 2012 from the Center for Biological Diversity. His passion for conservation spread through his family and resulted in many “family projects”, including two particularly prized publications with his grandsons on fish conservation. His family, his students, and his many colleagues continue to benefit from Jim’s leadership as we struggle to find better paths forward.

Resumen:
Entra texto de resumen en español

Presentation Type: Oral
Session: Special symposium
Student Award: No

Comments:




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