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Day 8

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As per usual, something went wrong with the van. Our original plan for the day was to leave Las Cuevas early in the morning in order to make it to ATM cave for a swim and exploration. Then, we were going to drive across Belize to stay at the zoo. This is not how our day went at all.

Most of the morning was spent sitting on the porch, waiting for our van to show up. This went on for several hours. Rather than spend all our time waiting, we got the opportunity to tour other parts of the Las Cuevas research station and learn about their ongoing projects.

When our van finally arrived, we all climbed gratefully into its semi-air-conditioned space. Unfortunately, our massive time delay prevented us from being able to visit the ATM cave.

However, we did end up going on the night tour of the Belize zoo. Not only did we get to see two of the eighteen jaguars that they have, but we got to see margays, ocelots (so noisy), two types of owls (Rice!), a tapir, and three kinds of snakes.

Overall, I remain optimistic about the rest of the trip. Each thing that goes wrong does not faze our group at all. The new challenges that the reef will pose to us will be just new bonding experiences for us.

 

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Day 7

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On our last day at the Las Cuevas Research station, we spent most the morning and afternoon retracing our steps from the first day. All of this was in the effort to understand if species richness differed between natural and man-made clearings. I am proud to say that the hike was not nearly as exhausting as it was at the beginning. I also got the change to see an example of epiphytic Encyclia cochleata, the national flower of Belize. I think I have achieved my peak of epiphyte. It was one of the most satisfying moments of this trip to date.

After cleaning up and showering we went over to the classroom for taxonomic presentations, my presentation on NTDs/ethnobotany, and to look at what our camera traps caught. I really enjoyed my topic, especially because I had taken a research seminar in the previous semester on the topic. We then got into an interesting discussion on how Brazil should manage the threat of Zika and the upcoming influx of people for the Rio de Janiero Olympics.

Our pictures from the camera trapping experiment were a bit disappointing until we got the last one. On its memory card, we found both and ocelot and a WHAT WAS THIS. Overall, our data set was way to small to be able to really tell anything about the preferences of animals in the Chiquibul for man-made or natural clearings. All in all, these past experiment (while they don’t yield statistically significant data) are doing a great job of showing me how to trouble shoot ecological/evolutionary experiments.

On to Glovers Reef!

 

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Day 6

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Today was not a great day for epiphytes. This isn’t because they weren’t out there, but just because we spent most of the day inside. Our main project was to interpret the results of our pitfall traps. After collecting the vials, we headed back to the classroom to assess the morphospecies found. Our hypotheses focused on whether species abundance and richness were different in the canopy versus the forest floor and whether or not canopy species were more attracted to a nitrogen source (our urine).

The first question was more straightforward than the second. We could clearly see that both abundance and richness were greater for the forest floor. However, teasing apart the question of nitrogen limitation in the canopy versus the forest floor proved to be much more complicated. In the end, we choose to represent the difference between the by creating data points by subtracting the amount of arthropods in the water from the urine (for canopy and ground). Upon discussing the report with Scott and Adrienne, we found many ways in which our work could be improved upon. Two of the most crucial changes we made was to use a proportion rather than a subtraction and to pool all samples we took (broadening our community). This refining process is both interesting and productive; many new research directions came from our discussion.

At the end of the day, we all went on a night hike. The difference in number of species we saw was really noticeable. As for epiphytes, I certainly saw them, but am becoming more and more convinced that this group is hard to pin down for any specific geographical location. So many of the factors of what species ends up where is tied to the specific characteristics of the niches of the Chiquibul forest. In the future, I would be interested took look into the literature for information on niche exploitation by epiphytes. I think it would greatly increase my comprehension of the epiphyte landscape.

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“SNAAAKE!”

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For our second to last day at Las Cuevas, we wrapped up our arthropod experiment by collecting all the pitfall traps set along the Maya trail yesterday. The majority of the day was dedicated to data analysis and the presentation of our results; there’s nothing quite like having a poster session in the middle of the rainforest.

We also spent a good part of the day discussing illegal extraction from the Chiquibul and the problems with conservation in Belize. I never fully appreciated the intricacies of conservation biology until today. The Chiquibul’s greatest threat is illegal extraction of plants and animals by Guatemalans from villages along the nearby border. Yet the issue of conservation is much greater than that of sustaining the area’s ecology and incorporates complex economic and political landscapes, as well. 

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Central American coral snake (Micrurus nigrocinctus).
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Central American coral snake (Micrurus nigrocinctus).

Since our activities were primarily indoors, the day offered few opportunities for reptile sightings. However, I was excited at the prospect of our first night hike—the evening brings out a number of nocturnal species, transforming the Chiquibul into a completely different habitat than it is during the day. We managed to spot all kinds of creepy crawlies, including spiders the size of your face and a giant roach that emitted a sticky white substance. By the end of the hike, I had nearly given up on searching for reptiles in the leaf-litter and under fallen logs. But at the very end of the trail, we approached a sinkhole; as I peered down I heard a shout of “snaaaake!” I looked down to find the distinctive tri-color banded pattern of the Central American coral snake (Micrurus nigrocinctus) all but a foot away from my boot. The snake was small but could clearly be identified as one of the most venomous snakes found in Central America. Just goes to show that you can never stop looking.

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The Art of Spelunking (Day 5)

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I never truly appreciated the feeling of being clean until today. There’s one thing about coming back hot and sweaty after a hike, but it’s quite a different feeling returning from an afternoon of spelunking covered in a fine mixture of mud and bat guano.

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View from inside Las Cuevas cave.
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Wrinkle-faced bat inside Las Cuevas cave.

But let’s backtrack. Today’s tasks began relatively lightly by wrapping up our (inconclusive) cecropia experiments. The day’s primary activity was the exploration of the cave from which Las Cuevas gets its name (and water). The 9-chambered cave is the center of an ancient Mayan ceremonial site, with each of the rooms representing one of the nine layers of the Mayan underworld. The cave holds numerous Mayan structures and pottery, and even what appeared to be a human femur. I doubt I’ll be picking up spelunking for recreation anytime soon, but our exploration gave me a newfound appreciation for cave biology. We found two species of bats within the cave system, as we crawled on hands and knees through narrow passageways that opened into large caverns. I thought I was clean until the cave’s final test: a tiny chamber with low oxygen content, housing a peccary skeleton. Let’s just say I was in great need of a hot bath after that adventure.

Finally, we set up an experiment to test nitrogen deficiency in arthropods of the rainforest canopy. Once again, we utilized extremely sophisticated technologies to create pitfall traps for arthropods in the canopy and forest floor, taking advantage of our most accessible nitrogen source: urine. I was thankfully spared from urine collection, but the afternoon was dedicated to setting up pitfall traps along the Maya trail (not named after yours truly). Though there were no sightings today, the leaf-litter our traps were set in are a prime habitat for venomous snakes; the forest floor was thoroughly checked for species like the yellow-jawed tommygoff (Bothrops asper) before setting traps. I did however spot several anole species along the Maya trail, all of which moved too quickly to be identified.

All in all, day 5 of EBIO 319 is best summed up by the following statement by Dr. Scott Solomon, “We’re exploring the mammalian excretory system!”

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Smile for the Camera

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Today’s task seemed simple: form a hypothesis and set up 12 camera traps in the forest surrounding LCRS. 

Twelve hours later, our work is finally complete, but it was much easier said than done. After a 5:30am birdwatching session and a hot cup of tea, we set off to develop our experiment. We opted to test the impact of human pathways on local species richness and composition in the Chiquibul by setting up camera traps along roads and trails, as well as in natural clearings. In five days, we’ll collect these traps and see what diverse organisms they’ve managed to catch on film.

The morning’s hike seemed manageable on a map, but many hours and some (incredible) scarlet macaw sightings later, we had set up only half of our traps. By our 3pm lunch break, I had walked 7.8 miles or 16, 652 steps. Talk about a morning workout. 

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View from Bird Tower near LCRS.

Right before lunch, we ended our work at the Las Cuevas Bird Tower. The rickety tower stands at over 600 m of elevation, and the view is almost worth the steep hike up. (Note to entrepreneurs: the Bird Tower would be an ideal location for opening an ice cream stand).

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Sumichrast’s skink (Eumeces sumichrasti).

Despite sweat and blisters, we loaded up on lunch and set off on the Monkey Tail Trail to install the remaining traps in clearings and a natural stream. The main reptile for today was the Sumichrast’s skink (Eumeces sumichrasti), an orange and black lizard with a bright blue tail. I saw evolution in action when we caught a blue-tailed skink; the lizard quickly shed its skin and darted off, leaving the wriggling blue tail in our palms (and the rest of the animal out of sight). 

With our twelfth and final camera trap set in a mud wallow for a prospective tapir sighting, we finally trudged our way home. Though we were all exhausted and covered in sweat (and ticks, in some cases), I found some  peace in the pitch black of the forest. The trees of the canopy arched over the trail to form a tunnel, just like the trees at home on University Boulevard. And just as the blinking lights of the city lead me home at Rice, the twinkling eyes of spiders lit up the trail with pinpricks of yellow light, finally leading us back to Las Cuevas.

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A Visit to the Maya (by Maya)

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Though we’ve finally settled in the heart of the Chiquibul Forest, I may have been too hasty in my previous assessment of our luck on this trip.

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Silky anole (Anolis sericeus).

The morning began with little sleep, some unidentifiable (but delicious) fried bread, a blue-crowned motmot sighting, and our departure from the Crystal Paradise and San Ignacio. Just as we set off, I caught this silky anole (Anolis sericeus).

Our first stop was a step 2000 years back in history, to the ancient Mayan city of Ozhuitza at the Caracol Archaeological Site. The great city now stands in ruins, with only the largest structures of the ancient city center excavated today. I became a momentary archaeologist, traipsing through the remains of a metropolis that once housed 150,000 people. We climbed 43 meters with many, many steps to the top of Caracol’s “Sky Palace,” the tallest structure in Belize.

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Caracol Archaeological Site.

The day’s reptile sightings remained sparse compared to yesterday’s excitement; Caracol only yielded a few stray skinks, darting among the ruins. The morning’s greatest surprise was the sight of the odd hanging nests characteristic of the Montezuma’s oropendola. As we entered what can best be described as the suburbs of Ozhuitza, I caught a glimpse of the birds’ bright yellow tails. We watched the intricately woven nests swing like pendulums in the breeze to the tune of the oropendula’s strange mating call.

However, as soon as we left Caracol, the Mayan gods appear to have left our side. Our journey to the Chiquibul was cut short by an unanticipated lack of oil. In true field biologist fashion, we halted our journey outside a military checkpoint and seated ourselves on the dirt road for a lecture on the termite species of Belize. But in just a few short hours, two pickup trucks with a bed full of TFBs finally found their way to Las Cuevas Research Station. For the next five days, we’ll make our home here in the forest—hopefully, with a little more luck this time.