Laguna Atascosa National Wildlife Refuge |
As the Texas Master Naturalist program has grown over the past twenty-five years, the annual state meeting has evolved from the informal “camp style” gatherings of earlier years to full blown professional conferences at resort hotels. Of the more than 100 Advanced Training opportunities at the most recent meeting in McAllen, twenty were field sessions that allowed attendees to explore the diverse ecosystems of the Lower Rio Grande Valley. Of all the sessions offered, the field trips are the highlight of this annual October event.
The first field session I attended was a pre-conference all-day exploration of four coastal sites devoted to the conservation of South Texas habitat and preservation of wildlife. The field session, entitled "Coastal Conservation Cooperative," began with a stop at Cactus Creek Ranch, a privately owned wildlife conservation ranch and learning center. After breakfast and orientation by owner and operator Mary Jo Bogatto, we toured the property and learned about its transformation from overgrazed cattle ranch to "re-wilded" coastal prairie and thornscrub forest, a process aided by the planting of more than 200,000 native grasses and forbs. On an hour-long hike, we encountered several gulf marsh fiddler crabs (Minuca longisignalis), and one of our group picked one up and learned how to distinguish males from females. After getting back on the van and leaving Cactus Creek Ranch, we saw a flock of wood storks (Mycteria americana) on the edge of a pond.
American Alligator |
Equally thrilling was spotting a trio of American alligators (Alligator mississippiensis) under a highway bridge as we drove to our next stop, Laguna Atascosa National Wildlife Refuge, a coastal preserve encompassing 110,000 acres. We explored this pristine landscape with stops along the fourteen-mile Steve Thompson Wildlife Drive, a coastal prairie loop. At one of our stops, we hiked down a path that tunneled through the dense growth of Tamaulipan thornscrub. From a viewing platform, we looked over coastal wetland habitats and Laguna Madre Bay. We also observed several native animals, including a Texas tortoise (Gopherus berlandieri), a javelina (Dicotyles tajacu), and several brilliantly colored green jays (Cyanocorax yncas). In the distance we glimpsed nilgai (Boselaphus tragocamelus), a species of antelope introduced to South Texas from Southeast Asia in the 1950s.
Texas Tortoise |
Our third stop was the South Padre Island Birding and Nature Center, whose mission is to educate the public about the flora and fauna of the island with the goal of expanding environmental awareness. Our guide for the entire day, Javier Gonzalez, works as a Naturalist Educator at the Birding and Nature Center and, in that capacity, led us on a tour of tidal wetlands. From the vantage point of boardwalks and blinds extending over the water, we saw dozens of species of native birds, including reddish egrets (Egretta rufescens), brown pelicans (Pelecanus occidentalis), and common gallinules (Gallinula galeata).
We ended the day with a tour of the South Texas Ecotourism Center, which, in addition to highlighting the natural assets of South Texas, provides an active demonstration of stormwater management through the restoration and preservation of the Laguna Madre, one of only six of the world’s hypersaline coastal lagoons (which are saltier than normal seawater). This unique ecosystem is visible from an extended ramp and viewing platform; perched high above the flats, we had an uninterrupted view of this fragile landscape.
South Texas Ecotourism Center |
While the all-day coastal field trip offered the most immersive experiences, two half-day adventures were also rewarding. The next morning I joined dozens of other Master Naturalists at the National Butterfly Center, a 100-acre site dedicated to the conservation and study of butterflies in their native habitats. The native botanical garden attracts butterflies, other pollinators, and birds. The purpose of our visit, as we explored the garden and trails, was to participate in a bioblitz led by Wendy Anderson, a Texas Nature Trackers Biologist with Texas Parks and Wildlife Department. Our observations automatically populated an iNaturalist project created for the state meeting that covered every major natural site in South Texas. Only thirty-six observers participated during the five days of the conference, but their contributions were impressive—a total of 4,164 observations, representing 1,067 species.
Quinta Mazatlán World Birding Center |
My third field session took place just a few miles from the McAllen Convention Center, at Quinta Mazatlán, a World Birding Center located on the grounds of a 1930’s country estate. Surrounded by residential development, those fifteen acres afford unexpected solitude as soft trails wind through restored Tamaulipan thorn forest, the quiet broken only by the calls of green jays (Cyanocorax yncas), plain chachalacas (Ortalis vetula), and other birds drawn to this oasis.
Giant Toad, Quinta Mazatlán World Birding Center |
The last full day of the annual meeting was an extended field session for the more than 400 conference attendees who traveled to El Sauz Ranch, one of six properties, a total of 217,000 cares, under the stewardship of the East Foundation. El Sauz is a working cattle ranch that adheres to wildlife management practices that are a model of rangeland conservation. In addition to viewing the annular solar eclipse on October 14th, attendees rotated through six outdoor field stations and learned about everything from South Texas brush ecology to ocelot research. El Sauz is one of the few places in Texas where these endangered cats live. More than thirty of the eighty or so ocelots (Leopardus pardalis) living in the United States have been documented at El Sauz Ranch. They are protected by the remoteness of the site and the prevalence of Tamaulipan thorn forest, habitat that is essential to their survival.
Laguna Atascosa NWR Thornscrub |
My visit to El Sauz Ranch brought my experience at the 2023 meeting of Texas Master Naturalists full circle and reinforced the important lessons my collective field experiences provided. I left South Texas with a deeper understanding of the area’s unique ecosystems that was even stronger because I was able to explore the area in depth.